Роль морфонологического фактора в обогащении лексического запаса языка

This paper discusses a problem of functioning of grammatical variants of inflection forms and substantive word-formations on the surface of lexical semantics in the Slavonic languages. Author comes to conclusion that the role of morphonological factor in vocabulary enrichment consists in the liquidation of the segmental alternations on the morpheme borders in the process of diachronic development of grammatical variation of substantive forms. Depending on the presence or absence of alternations, the grammatical meaning of concrete variants of inflectional forms or substantive wordformations can be lexicalizated and build the different meanings and/or stylistic connotations in the lexical subsystem of language.