The modern Russian Language is characterized by use of analytical nominative units, such as pronominal – substantive combinations (comp.: «something strange»), which compensate approximative insufficiency of lexicon in individual perception. Such nominative units are functions of nominative-syntactical semiosis when denotation is formed with the help of syntactic parts of the text. These analytical groups are idiostylistic markers, which are typical of the language of belles-lettres literature. Approximation as nominative phenomenon plays the main role in the foundation of the language world picture. Besides, it helps to give the characteristics of the field of Russian concepts and the mental world of Russian people.