“…It should be noted that diachronic developments of individual lexical units and their groupings (Dobrovolska, 2017) have been in the focus of historical linguistics (Nesset & Makarova, 2014), because they enable scholars to trace the history of an individual word, the evolution of its meaning, productive word-building models, specific features and types of structural and semantic changes (Tsaregorodtseva, 2009; Shatalova, 2011) and, on a broader scale, the patterns of vocabulary development. Etymology, which is exclusively diachronic (Dworkin, 2015), involves the study of the word origin (Malkiel, 1993;Toporov, 2004), their primary word-formation structure and elements of their ancient meaning that help to identify the specificity of the development of the language's lexical system in general and its individual groups (Dworkin, 2015).…”