This article, "Ma Kings Ens Eof Words", stresses the importance of vocabulary because of its role in communicative competence. Corpus linguistics has changed the way we consider vocabulary teaching, from isolated words to language chunks and fixed expressions. It has shown us differences between spoken and written English. This article looks at what it means to know a word and the principles and techniques to develop vocabulary. The author recommends teaching vocabulary explicitly, including collocates and word parts. He encourages teachers to update their own knowledge of how to discuss and approach vocabulary.