Investigating speech of Russian and Ukrainian language users in the regions with mixed population

In the article basic approaches to the analysis of text corpus that registers spontaneous speech of Russian and Ukrainian language users of Volgogradskaya oblast in the regions with mixed population are introduced. The authors dwell on functional interplay between various groups of lexis in situations of direct and permanent contacts of dialect speakers - the ethnic Ukrainians and Russians (the Don Cossacks). Mixed and enclave characteristics of informants lexicon are displayed, bilinguals, representatives of Russian-Ukrainian families, natives and migrants including.