The West Slavic languages are a subdivision of the Slavic language group that includes Czech, Polish, Slovak, Kashubian, Lower Sorbian and Upper Sorbian.Classification according to the traditional model: Indo-European Balto-Slavic Slavic West Slavic Czech–Slovak languages Czech Slovak Lechitic Polish Pomeranian (†) Kashubian Slovincian (†) Polabian (†) Sorbian languages Upper Sorbian Lower Sorbian↑ ↑