Vocabulary is the key to communication. For a large majority of learners the ultimate goal of studying is to be able to communicate in a new language and the most important task is acquiring a sufficiently large vocabulary. Vocabulary that includes not just words but also their meaning, orthography, pronunciation, context and conjugation, is in the very essence of the process of learning a new language. Thus the point of having a good vocabulary is being able to choose words with greater precision, understanding the ones you already know better, hence a good vocabulary makes your communication simpler. So the teacher’s role in helping the learners with the acquisition of vocabulary is quite essential and there have been considered some relevant aspects and strategies of the process of foreign language learning. This article proposes some practical activity to teach vocabulary in a context within the English classroom. It highlights the role of the active and passive vocabulary teaching process.