Slang is a very interesting concept that generally exists in any language. In particular, this layer of the lexical system of the language is very actively expanding in modern times, we would say that it is becoming more widespread among young people and new ones are being formed. This is especially due to the fact that many of the restrictions that have existed so far in public and private life have been removed, and therefore it manifests itself in language, people are able to express their views. In some cases, it seems that the use of slang is due to illiteracy, but in fact this is not the case. Slangs, as a rule, differ significantly from the norm of literary language. Of course, this is not always the case. It is the first to react to every event and change in society and is able to assimilate them, and therefore slangs are more popular among young people. Slang is distinguished from dialects and dialects by its vocabulary. The words in its lexical system are mainly divided into three groups: a) words taken from another language; b) specially installed words; c) words with changed meaning, etc. Words in slang are unusual. This feature enhances the listener's sense of expressiveness and expressiveness. As a result, there is an opportunity to spread. Elements of slang are rapidly spreading and used in the art world, albeit by a small number of people. Slang is not the same in all nations. Thus, in many nations it is weak, and in some nations it is strong. For example, slang related to hunting and trade was widespread in Russian until the beginning of the 20th century. The origin, formation and development of slangs, as well as tracking their transformation into literary language over time, researching their cognitive relationship, summarizing these ideas, classifying slang, studying their origin and use from a social and functional point of view can be considered a scientific innovation of our research.