diff --git a/frontend/src/i18n/locales/de/socialnetwork.json b/frontend/src/i18n/locales/de/socialnetwork.json
index d5b0949..864ed52 100644
--- a/frontend/src/i18n/locales/de/socialnetwork.json
+++ b/frontend/src/i18n/locales/de/socialnetwork.json
@@ -360,21 +360,30 @@
                 "optional": "Optional",
                 "invalidCode": "Ungültiger Code",
                 "courseNotFound": "Kurs nicht gefunden",
-                "grammarExercises": "Grammatik-Übungen",
-                "noExercises": "Keine Übungen verfügbar",
+                "grammarExercises": "Grammatik-Prüfung",
+                "noExercises": "Keine Prüfung verfügbar",
                 "enterAnswer": "Antwort eingeben",
                 "checkAnswer": "Antwort prüfen",
                 "correct": "Richtig!",
                 "wrong": "Falsch",
                 "explanation": "Erklärung",
                 "learn": "Lernen",
-                "exercises": "Übungen",
+                "exercises": "Kapitel-Prüfung",
                 "learnVocabulary": "Vokabeln lernen",
+                "lessonDescription": "Lektions-Beschreibung",
                 "culturalNotes": "Kulturelle Notizen",
+                "grammarExplanations": "Grammatik-Erklärungen",
                 "importantVocab": "Wichtige Begriffe",
-                "vocabInfoText": "Diese Begriffe werden in den Übungen verwendet. Lerne sie hier passiv, bevor du zu den interaktiven Übungen wechselst.",
-                "noVocabInfo": "Lies die Beschreibung oben und die Erklärungen in den Übungen, um die wichtigsten Begriffe zu lernen.",
-                "startExercises": "Zu den Übungen",
+                "vocabInfoText": "Diese Begriffe werden in der Prüfung verwendet. Lerne sie hier passiv, bevor du zur Kapitel-Prüfung wechselst.",
+                "noVocabInfo": "Lies die Beschreibung oben und die Erklärungen in der Prüfung, um die wichtigsten Begriffe zu lernen.",
+                "vocabTrainer": "Vokabeltrainer",
+                "vocabTrainerDescription": "Übe die wichtigsten Begriffe dieser Lektion interaktiv.",
+                "startVocabTrainer": "Vokabeltrainer starten",
+                "stopTrainer": "Trainer beenden",
+                "translateTo": "Übersetze ins Deutsche",
+                "translateFrom": "Übersetze ins Bisaya",
+                "next": "Weiter",
+                "startExercises": "Zur Kapitel-Prüfung",
                 "correctAnswer": "Richtige Antwort",
                 "alternatives": "Alternative Antworten"
             }
diff --git a/frontend/src/i18n/locales/en/socialnetwork.json b/frontend/src/i18n/locales/en/socialnetwork.json
index 72a2dcb..a388125 100644
--- a/frontend/src/i18n/locales/en/socialnetwork.json
+++ b/frontend/src/i18n/locales/en/socialnetwork.json
@@ -360,21 +360,30 @@
                 "optional": "Optional",
                 "invalidCode": "Invalid code",
                 "courseNotFound": "Course not found",
-                "grammarExercises": "Grammar Exercises",
-                "noExercises": "No exercises available",
+                "grammarExercises": "Chapter Test",
+                "noExercises": "No test available",
                 "enterAnswer": "Enter answer",
                 "checkAnswer": "Check Answer",
                 "correct": "Correct!",
                 "wrong": "Wrong",
                 "explanation": "Explanation",
                 "learn": "Learn",
-                "exercises": "Exercises",
+                "exercises": "Chapter Test",
                 "learnVocabulary": "Learn Vocabulary",
+                "lessonDescription": "Lesson Description",
                 "culturalNotes": "Cultural Notes",
+                "grammarExplanations": "Grammar Explanations",
                 "importantVocab": "Important Vocabulary",
-                "vocabInfoText": "These terms are used in the exercises. Learn them here passively before switching to the interactive exercises.",
-                "noVocabInfo": "Read the description above and the explanations in the exercises to learn the most important terms.",
-                "startExercises": "Start Exercises",
+                "vocabInfoText": "These terms are used in the test. Learn them here passively before switching to the chapter test.",
+                "noVocabInfo": "Read the description above and the explanations in the test to learn the most important terms.",
+                "vocabTrainer": "Vocabulary Trainer",
+                "vocabTrainerDescription": "Practice the most important terms of this lesson interactively.",
+                "startVocabTrainer": "Start Vocabulary Trainer",
+                "stopTrainer": "Stop Trainer",
+                "translateTo": "Translate to English",
+                "translateFrom": "Translate to Target Language",
+                "next": "Next",
+                "startExercises": "Start Chapter Test",
                 "correctAnswer": "Correct Answer",
                 "alternatives": "Alternative Answers"
             }
diff --git a/frontend/src/views/social/VocabLessonView.vue b/frontend/src/views/social/VocabLessonView.vue
index 3af244e..6cb7e7b 100644
--- a/frontend/src/views/social/VocabLessonView.vue
+++ b/frontend/src/views/social/VocabLessonView.vue
@@ -32,14 +32,74 @@
       <div v-if="activeTab === 'learn'" class="learn-section">
         <h3>{{ $t('socialnetwork.vocab.courses.learnVocabulary') }}</h3>
         
+        <!-- Lektions-Beschreibung -->
+        <div v-if="lesson && lesson.description" class="lesson-description-box">
+          <h4>{{ $t('socialnetwork.vocab.courses.lessonDescription') }}</h4>
+          <p>{{ lesson.description }}</p>
+        </div>
+
         <!-- Kulturelle Notizen -->
         <div v-if="lesson && lesson.culturalNotes" class="cultural-notes">
           <h4>{{ $t('socialnetwork.vocab.courses.culturalNotes') }}</h4>
           <p>{{ lesson.culturalNotes }}</p>
         </div>
 
-        <!-- Wichtige Begriffe aus den Übungen (nur Anzeige, keine Interaktion) -->
-        <div v-if="lesson && importantVocab && importantVocab.length > 0" class="vocab-list">
+        <!-- Grammatik-Erklärungen -->
+        <div v-if="grammarExplanations && grammarExplanations.length > 0" class="grammar-explanations">
+          <h4>{{ $t('socialnetwork.vocab.courses.grammarExplanations') }}</h4>
+          <div v-for="(explanation, index) in grammarExplanations" :key="index" class="grammar-explanation-item">
+            <strong>{{ explanation.title }}</strong>
+            <p>{{ explanation.text }}</p>
+          </div>
+        </div>
+
+        <!-- Vokabeltrainer -->
+        <div v-if="importantVocab && importantVocab.length > 0" class="vocab-trainer-section">
+          <h4>{{ $t('socialnetwork.vocab.courses.vocabTrainer') }}</h4>
+          <div v-if="!vocabTrainerActive" class="vocab-trainer-start">
+            <p>{{ $t('socialnetwork.vocab.courses.vocabTrainerDescription') }}</p>
+            <button @click="startVocabTrainer" class="btn-start-trainer">
+              {{ $t('socialnetwork.vocab.courses.startVocabTrainer') }}
+            </button>
+          </div>
+          <div v-else class="vocab-trainer-active">
+            <div class="vocab-trainer-stats">
+              <span>{{ $t('socialnetwork.vocab.courses.correct') }}: {{ vocabTrainerCorrect }}</span>
+              <span>{{ $t('socialnetwork.vocab.courses.wrong') }}: {{ vocabTrainerWrong }}</span>
+              <button @click="stopVocabTrainer" class="btn-stop-trainer">{{ $t('socialnetwork.vocab.courses.stopTrainer') }}</button>
+            </div>
+            <div v-if="currentVocabQuestion" class="vocab-question">
+              <div class="vocab-prompt">
+                <div class="vocab-direction">{{ vocabTrainerDirection === 'L2R' ? $t('socialnetwork.vocab.courses.translateTo') : $t('socialnetwork.vocab.courses.translateFrom') }}</div>
+                <div class="vocab-word">{{ currentVocabQuestion.prompt }}</div>
+              </div>
+              <div v-if="vocabTrainerAnswered" class="vocab-feedback" :class="{ correct: vocabTrainerLastCorrect, wrong: !vocabTrainerLastCorrect }">
+                <div v-if="vocabTrainerLastCorrect">{{ $t('socialnetwork.vocab.courses.correct') }}!</div>
+                <div v-else>
+                  {{ $t('socialnetwork.vocab.courses.wrong') }}. {{ $t('socialnetwork.vocab.courses.correctAnswer') }}: {{ currentVocabQuestion.answer }}
+                </div>
+              </div>
+              <div v-else class="vocab-answer-area">
+                <input 
+                  v-model="vocabTrainerAnswer" 
+                  @keydown.enter.prevent="checkVocabAnswer"
+                  :placeholder="$t('socialnetwork.vocab.courses.enterAnswer')"
+                  class="vocab-input"
+                  ref="vocabInput"
+                />
+                <button @click="checkVocabAnswer" :disabled="!vocabTrainerAnswer.trim()">
+                  {{ $t('socialnetwork.vocab.courses.checkAnswer') }}
+                </button>
+              </div>
+              <div v-if="vocabTrainerAnswered" class="vocab-next">
+                <button @click="nextVocabQuestion">{{ $t('socialnetwork.vocab.courses.next') }}</button>
+              </div>
+            </div>
+          </div>
+        </div>
+
+        <!-- Wichtige Begriffe Liste (nur Anzeige) -->
+        <div v-if="lesson && importantVocab && importantVocab.length > 0 && !vocabTrainerActive" class="vocab-list">
           <h4>{{ $t('socialnetwork.vocab.courses.importantVocab') }}</h4>
           <p class="vocab-info-text">{{ $t('socialnetwork.vocab.courses.vocabInfoText') }}</p>
           <div class="vocab-items">
@@ -52,7 +112,7 @@
         </div>
 
         <!-- Hinweis wenn keine Vokabeln vorhanden -->
-        <div v-else-if="lesson" class="no-vocab-info">
+        <div v-else-if="lesson && (!importantVocab || importantVocab.length === 0)" class="no-vocab-info">
           <p>{{ $t('socialnetwork.vocab.courses.noVocabInfo') }}</p>
         </div>
 
@@ -188,7 +248,17 @@ export default {
       lesson: null,
       exerciseAnswers: {},
       exerciseResults: {},
-      activeTab: 'learn' // Standardmäßig "Lernen"-Tab
+      activeTab: 'learn', // Standardmäßig "Lernen"-Tab
+      // Vokabeltrainer
+      vocabTrainerActive: false,
+      vocabTrainerPool: [],
+      vocabTrainerCorrect: 0,
+      vocabTrainerWrong: 0,
+      currentVocabQuestion: null,
+      vocabTrainerAnswer: '',
+      vocabTrainerAnswered: false,
+      vocabTrainerLastCorrect: false,
+      vocabTrainerDirection: 'L2R' // L2R: learning->reference, R2L: reference->learning
     };
   },
   computed: {
@@ -196,6 +266,32 @@ export default {
     hasExercises() {
       return this.lesson && this.lesson.grammarExercises && this.lesson.grammarExercises.length > 0;
     },
+    grammarExplanations() {
+      // Extrahiere Grammatik-Erklärungen aus den Übungen
+      try {
+        if (!this.lesson || !this.lesson.grammarExercises || !Array.isArray(this.lesson.grammarExercises)) {
+          return [];
+        }
+        
+        const explanations = [];
+        const seen = new Set();
+        
+        this.lesson.grammarExercises.forEach(exercise => {
+          if (exercise.explanation && !seen.has(exercise.explanation)) {
+            seen.add(exercise.explanation);
+            explanations.push({
+              title: exercise.title || '',
+              text: exercise.explanation
+            });
+          }
+        });
+        
+        return explanations;
+      } catch (e) {
+        console.error('Fehler beim Extrahieren der Grammatik-Erklärungen:', e);
+        return [];
+      }
+    },
     importantVocab() {
       // Extrahiere wichtige Begriffe aus den Übungen
       try {
@@ -408,6 +504,58 @@ export default {
     },
     back() {
       this.$router.push(`/socialnetwork/vocab/courses/${this.courseId}`);
+    },
+    // Vokabeltrainer-Methoden
+    startVocabTrainer() {
+      if (!this.importantVocab || this.importantVocab.length === 0) return;
+      this.vocabTrainerActive = true;
+      this.vocabTrainerPool = [...this.importantVocab];
+      this.vocabTrainerCorrect = 0;
+      this.vocabTrainerWrong = 0;
+      this.nextVocabQuestion();
+      this.$nextTick(() => {
+        this.$refs.vocabInput?.focus?.();
+      });
+    },
+    stopVocabTrainer() {
+      this.vocabTrainerActive = false;
+      this.currentVocabQuestion = null;
+      this.vocabTrainerAnswer = '';
+      this.vocabTrainerAnswered = false;
+    },
+    nextVocabQuestion() {
+      if (!this.vocabTrainerPool || this.vocabTrainerPool.length === 0) {
+        this.currentVocabQuestion = null;
+        return;
+      }
+      const randomIndex = Math.floor(Math.random() * this.vocabTrainerPool.length);
+      const vocab = this.vocabTrainerPool[randomIndex];
+      this.vocabTrainerDirection = Math.random() < 0.5 ? 'L2R' : 'R2L';
+      this.currentVocabQuestion = {
+        vocab: vocab,
+        prompt: this.vocabTrainerDirection === 'L2R' ? vocab.learning : vocab.reference,
+        answer: this.vocabTrainerDirection === 'L2R' ? vocab.reference : vocab.learning
+      };
+      this.vocabTrainerAnswer = '';
+      this.vocabTrainerAnswered = false;
+      this.$nextTick(() => {
+        this.$refs.vocabInput?.focus?.();
+      });
+    },
+    normalizeVocab(s) {
+      return String(s || '').trim().toLowerCase().replace(/\s+/g, ' ');
+    },
+    checkVocabAnswer() {
+      if (!this.currentVocabQuestion || !this.vocabTrainerAnswer.trim()) return;
+      const userAnswer = this.normalizeVocab(this.vocabTrainerAnswer);
+      const correctAnswer = this.normalizeVocab(this.currentVocabQuestion.answer);
+      this.vocabTrainerLastCorrect = userAnswer === correctAnswer;
+      if (this.vocabTrainerLastCorrect) {
+        this.vocabTrainerCorrect++;
+      } else {
+        this.vocabTrainerWrong++;
+      }
+      this.vocabTrainerAnswered = true;
     }
   },
   async mounted() {
@@ -673,6 +821,201 @@ export default {
 
 .separator {
   color: #999;
+  margin: 0 10px;
+}
+
+.lesson-description-box {
+  margin: 20px 0;
+  padding: 15px;
+  background: #fff;
+  border: 1px solid #ddd;
+  border-radius: 4px;
+}
+
+.lesson-description-box h4 {
+  margin-top: 0;
+  color: #333;
+}
+
+.grammar-explanations {
+  margin: 20px 0;
+  padding: 15px;
+  background: #fff3cd;
+  border-left: 4px solid #ffc107;
+  border-radius: 4px;
+}
+
+.grammar-explanations h4 {
+  margin-top: 0;
+  color: #856404;
+}
+
+.grammar-explanation-item {
+  margin: 15px 0;
+  padding: 10px;
+  background: white;
+  border-radius: 4px;
+}
+
+.grammar-explanation-item strong {
+  display: block;
+  margin-bottom: 5px;
+  color: #856404;
+}
+
+.vocab-trainer-section {
+  margin: 20px 0;
+  padding: 15px;
+  background: #fff;
+  border: 1px solid #ddd;
+  border-radius: 4px;
+}
+
+.vocab-trainer-section h4 {
+  margin-top: 0;
+  color: #333;
+}
+
+.vocab-trainer-start {
+  text-align: center;
+}
+
+.btn-start-trainer {
+  padding: 10px 20px;
+  background: #4CAF50;
+  color: white;
+  border: none;
+  border-radius: 4px;
+  cursor: pointer;
+  font-size: 1em;
+  margin-top: 10px;
+}
+
+.btn-start-trainer:hover {
+  background: #45a049;
+}
+
+.vocab-trainer-stats {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  margin-bottom: 15px;
+  padding: 10px;
+  background: #f5f5f5;
+  border-radius: 4px;
+}
+
+.btn-stop-trainer {
+  padding: 5px 15px;
+  background: #dc3545;
+  color: white;
+  border: none;
+  border-radius: 4px;
+  cursor: pointer;
+  font-size: 0.9em;
+}
+
+.btn-stop-trainer:hover {
+  background: #c82333;
+}
+
+.vocab-question {
+  margin-top: 15px;
+}
+
+.vocab-prompt {
+  padding: 15px;
+  background: #f9f9f9;
+  border: 1px solid #ddd;
+  border-radius: 4px;
+  margin-bottom: 15px;
+}
+
+.vocab-direction {
+  color: #666;
+  font-size: 0.9em;
+  margin-bottom: 5px;
+}
+
+.vocab-word {
+  font-size: 1.5em;
+  font-weight: bold;
+  color: #333;
+}
+
+.vocab-answer-area {
+  display: flex;
+  gap: 10px;
+  margin-bottom: 15px;
+}
+
+.vocab-input {
+  flex: 1;
+  padding: 10px;
+  border: 1px solid #ddd;
+  border-radius: 4px;
+  font-size: 1em;
+}
+
+.vocab-answer-area button {
+  padding: 10px 20px;
+  background: #4CAF50;
+  color: white;
+  border: none;
+  border-radius: 4px;
+  cursor: pointer;
+  font-size: 1em;
+}
+
+.vocab-answer-area button:hover:not(:disabled) {
+  background: #45a049;
+}
+
+.vocab-answer-area button:disabled {
+  background: #ccc;
+  cursor: not-allowed;
+}
+
+.vocab-feedback {
+  padding: 15px;
+  border-radius: 4px;
+  margin-bottom: 15px;
+}
+
+.vocab-feedback.correct {
+  background: #d4edda;
+  color: #155724;
+  border: 1px solid #c3e6cb;
+}
+
+.vocab-feedback.wrong {
+  background: #f8d7da;
+  color: #721c24;
+  border: 1px solid #f5c6cb;
+}
+
+.vocab-next {
+  margin-top: 15px;
+}
+
+.vocab-next button {
+  padding: 10px 20px;
+  background: #007bff;
+  color: white;
+  border: none;
+  border-radius: 4px;
+  cursor: pointer;
+  font-size: 1em;
+}
+
+.vocab-next button:hover {
+  background: #0056b3;
+}
+
+.vocab-info-text {
+  color: #666;
+  font-size: 0.9em;
+  margin-bottom: 10px;
 }
 
 .no-vocab-info {