This research project delves into the intricate relationship between denotational and connotational meanings within synonymic expressions in the context of the Russian language. It aims to provide a comprehensive analysis of how synonymy operates at various linguistic levels, from lexical semantics to pragmatic implications. The study will encompass an examination of different types of synonyms, their semantic nuances, and the factors influencing their usage in both written and spoken discourse. Through rigorous analysis, the project intends to uncover the cognitive processes underlying synonymic choices and explore the role of contextual factors in shaping the interpretation of synonymic expressions. The project will consider the historical evolution of synonymic relations, considering factors such as cultural shifts and the influence of foreign languages on the Russian lexicon. Furthermore, the interplay between denotative and connotative meanings in synonymy will be analyzed to illuminate their dynamic interaction. The research will also touch upon the practical applications of understanding synonymy, particularly in areas such as lexicography, translation, and natural language processing.