Czech–Slovak languages
The Czech–Slovak languages (or Czecho-Slovak languages) are a subgroup branched from the West Slavic languages comprising the Czech and Slovak languages. Most varieties of Czech and Slovak are mutually intelligible, forming a dialect continuum (spanning the intermediate Moravian dialects) rather than being two clearly distinct languages; standardised forms of these two languages are, however, easily distinguishable and recognizable because of disparate vocabulary, orthography, pronunciation, phonology, suffixes and prefixes.