Modern Kostroma onomasticon, materials and researches (through the pages of Gromov works collections)

We study the Kostroma onomasticon, which has been formed since ancient times and is characterized by the predominance of Slavic features, along with a significant number of substrate toponyms and anthroponyms-borrowings mediated by the Russian language. An essential point in revealing the uniqueness of the Kostroma onomasticon is the consideration of the areal features of the western and eastern Kostroma patois, formed as a result of the peculiarities of the ancient Slavic settlement of the region. Similar researches of the toponymy and anthroponymy of the Kostroma Region in the most condensed form are concentrated in a series of scientific works collections published under the auspices of the Institute of Linguistic Studies of the Russian Academy of Sciences and Kostroma State University and dedicated to the memory of the Kostroma regional historian A.V. Gromov (Gromov works collections). On their pages, rural and urban geographical names of the Kostroma Region are analyzed, as well as local anthroponyms on the basis of living patois, documentary sources and works of fiction in terms of their historical, geographical, modal, functional-stylistic and typological features. We reveal their place in relation to the corresponding phenomena of different strata of the Russian language, their axiological role in relation to the opposing means of an elitist (officially recognized) nature. We draw conclusion about the persistence of the original features of the Kostroma onomasticon and its value for describing the originality of the lexical system of Kostroma patois as part of Slavia.