Лексико-семантическая группа

The theme of the current session essay is aimed at a more profound
study of one of the main aspects of Lexicology, which consists in acquiring the
meaning of words and word groups, as considered in a particular context.
Semantics is the study of meaning, and that’s really a lexicological
problem, because “one of the main features of any word is that it conveys always
one concept”