1) Vocabulary is a key component of language learning and communicative competence. Without an extensive vocabulary, learners cannot effectively use the structures and functions of the language. 2) There are two types of vocabulary: receptive vocabulary which learners understand but cannot produce, and productive vocabulary which learners can understand, pronounce, and use constructively. 3) Effective techniques for teaching vocabulary include using objects, drawings, illustrations, guessing from context, mime, eliciting translations, and contrast/enumeration. The type of vocabulary and learner characteristics should be considered when choosing techniques.