Comparative research into the landscape vocabulary in the mongolian languages from the perspective of language contacts

The article looks at language contacts between the Kalmyk and of Oirats living in Mongolia sphere lexis. lexical layer analyzed is landscape vocabulary. For comparison, materials from old-written Mongolian, Khalkha-Mongolian, Buryat languages were used. presence similar words testifies existence so-called general Mongolian former one people separated time space.