If we analyze the works on terminology, which has a special place in the fields of linguistics and translation studies, each field has alternative options that are used instead of certain active terms. In the 60s of the 20th century, it became an important issue to conduct research on alternative versions of terms, as well as semantic alternatives in the process of terminology regulation and standardization. Synonymous lexical units, concepts are widespread in the language, and they are the processes that occur as a result of the use of vocabulary. In many terminological publications, the nomination of special concepts or the lexical units of the field were compared and attempts to find out what and how their synonyms, doublets, variants were noted.