There are more than a milion words in the English languag. But don't get too nervous. Most English speakers use only about 20,000 English words. A Vocabulary is a set of familiar words within a person's language.A vocatudary, usually devetoped with age, serves as a useful and fundamental tool for communication and acquiring knowledge. Acquiring an extensive vocabulary is one of the largest challenges in learning a second language. Learning Engilsh vocabulary is a basic and very important part of learning the language. Learning a new vocabudary word means more than just understanding what the word means. To really learn new English words, you must understand them and be able to use the words correctly when you speak or wite. You will probably learn English words faster when they are important to your daily life or come from a subject that interests you. A good way to learn Englih vocabulary is too see and hear many repetitions of the words within a topic or an interesting context like a story or a reading. Receptive vocabulary includes words that we recognize when we hear or see them. Productive vocabulary includes words that we use when we speak or wirte. Receptive vocabulary is typically larger than productive vocabulary, and may include many words to which we assign some mearing, even if we don't know their full definitions and connotations-or ever use them Ourselves as we speak and write. This book can be a handy raference work to consult when you do not wish to pore over a selection of your other dictionaries, grammar textbooks, style sheets, speling lists and writing guides