Purpose of the Study: Research on the meaning structure of phraseological units representing the figurative richness of language has been central up to the present. Words and phraseological units of a language represent a universal basis for polysemy development, with virtually any language unit having enough potential for the development of new meanings. The subject of the study is polysemantic phraseological units of Yakut and Kazakh that have not been specifically studied before. Methodology: We analyzed Yakut phraseological units with four meanings and their equivalents in Kazakh. Polysemantic phraseological units of Yakut and Kazakh with a wide range of structural arrangement and a rich figurative potential for the convergent and diver...