Learning foreign language starts usually in childhood, in Primary school or in the Kindergarten and it takes many years. People have contact with this language for a long time , during which they are taking private lessons, courses or using another forms of learning, for example, going abroad to meet native speakers and their culture. In many cases years of learning the language is still not enough to use English correctly. Why it cause so many problems? Maybe because the methods of learning are inappropriate, motivation .
Language consist of words, phrases and grammar which is system of rules for writing and speaking. Those elements should be known to everyone who want to use the language. Significant part of it is vocabulary. The knowledge of bigger numbers of words make easy to communicate with another people. If people do not know particular word they can explain it in another way, instead of one word they can try to describe something by using simplest words which they know.