Over time, some of these dialects were given distinct names and recognized as separate languages (e.g. the Chulym language) after detailed linguistic study. However, the Chulym language was never classified as a dialect of Tatar language. Confusion arose because of the endoethnonym "Tatars" used by the Chulyms. The question of classifying the Chulym language as a dialect of the Khakass language was debatable. A brief linguistic analysis shows that many of these dialects exhibit features which are quite different from the Volga–Ural Tatar varieties, and should be classified as Turkic varieties belonging to several sub-groups of the Turkic languages, distinct from Kipchak languages to which Volga–Ural Tatar belongs.