General theory of synonyms, criteria of synonyms

In this article, the general properties, usage and linguistic meanings of synonyms and their mutual equivalents have been studied by comparison. Also, while we have studied synonyms in many ways, such as syntax, lexicology, and semantics, the novelty is that in modern linguistics, the types and different meanings of synonyms are studied in more depth. The sources of synonyms and their application in the context are closely related areas, which are related to the meanings of words.