Teaching vocabulary is important as it is present in the four language skills and impacts the process of learning a second language. Teachers must be aware of different vocabulary learning methods and choose what works best for their students. One effective approach is using words in authentic contexts so students can easily internalize meanings. Teachers also need to consider not just isolated words but also collocations, idioms, and phrases, and present vocabulary in context to help students retain meanings rather than forgetting easily. Vocabulary must be treated as essential, along with grammar and pronunciation, so students understand the meaning of what they produce.