Vocabulary with the Northern Russian dialect base in the Russian literary language
We analyze a number of significant issues of historical lexicology and dialectology related to the development of the Russian literary language, as well as to the study of the nature of its inclusion in the national language. We trace the connection of the codified language with such extra-literary elements as folk patois, vernacular, jargons, we determine their historical significance for the creation in the 18th-19th centuries of a new formation language, built on a democratic basis. Northern Russian patois, including Kostroma, are regarded as the most archaic layer of linguistic phenomena that influenced the Moscow Koine, on the basis of which the literary language was later formed. In this study, the North Russian dialect vocabulary and narrower, Kostroma, is considered as a source of the formation of the vocabulary fund of the literary language, and the artistic, journalistic and scientific works of Kostroma writers and local historians of the late 19th - 20th centuries (A.O. Ablesimov, N.A. Nekrasov, А.N. Ostrovsky, S.V. Maksimov, I.M. Kasatkin, E.V. Chestnyakov, N.N. Vinogradov, V.I. Smirnov, A.V. Gromov, etc.), related to the Kostroma region, as one of the channels of the “migration” of a regional word into the literary language, which largely contributed to its adaptation and consolidation in a standardized language, the development of extensive lexical and semantic connections and relationships.