The aim of the research is to provide a comparative theoretical and analytical review of Russian and foreign-language publications that directly or indirectly address the category of relations as an interdisciplinary object of research. The material in this article is problematic and interdisciplinary in nature and demonstrates broad views on the development of scientific knowledge about the category of relations. The scientific novelty of the work consists in the fact that for the first time research results on current issues are being summarized in the field of studying the category of relations and related relevant phenomena in the behavioral aspect in modern Russian and foreign linguistics. Such a summarization gives the most complete picture of the development of humanities research in this direction. As a result, the main motives for using the concept of relations and related concepts, its introduction and application in scientific contexts and the main development trends were identified. It was determined that behavioral relations correlate with linguistic, socially regulated and culturally specific factors. The findings represent a necessary basis for conducting a comprehensive description of this category as a linguistic phenomenon.