The recent growing interest in cognitive linguistics, scientific works, monographs and textbooks written in this field are evidence of this. Language levels and trends in their development, structural approach to languages, language and speech issues, functional approach to language units, etc. the problems have begun to be seriously investigated. One such issue is the study of modern cognitive linguistics and lexical-semantic systems. Language is subject to various influences in the process of development. These effects result in changes in different layers of language, including the lexical layer. This process leads to the obsolescence of word meanings in the lexicon, the emergence of new meanings, the expansion of meaning, the narrowing of meaning, the diversification of meaning, and so on. This leads to the fact that the connection between the lexical and semantic meanings of words is also affected; new lexical-semantic word groups appear. The article is rich in quotes from the works of many scholars.