code: sl; ISO 639-3 code: slv Eastern South Slavic languages Bulgarian: ISO 639-1 code: bg; ISO 639-3 code: bul Church Slavonic: ISO 639-1 code: cu; ISO 639-3 code: chu Macedonian: ISO 639-1 code: mk; ISO 639-3 code: mkd West Slavic languages: Sorbian languages Lower Sorbian (also known as Lusatian): ISO 639-3 code: dsb Upper Sorbian: ISO 639-3 code: hsb Lechitic languages Kashubian: ISO 639-3 code: csb Polish: ISO 639-1 code: pl; ISO 639-3 code: pol Silesian: ISO 639-3 code: szl Czech–Slovak languages Czech: ISO 639-1 code: cs; ISO 639-3 ces Slovak: ISO 639-1 code: sk; ISO 639-3 code: slk Para- and supranational languages Church Slavonic language, variations of Old Church Slavonic with significant replacement of the original vocabulary by forms from the Old East Slavic and other regional forms. The Bulgarian Orthodox Church, Russian Orthodox Church, Polish Orthodox Church, Macedonian Orthodox Church, Serbian Orthodox Church, and even some Roman Catholic Churches in Croatia continue to use Church Slavonic as a liturgical language. While not used in modern times, the text of a Church Slavonic Roman Rite Mass survives in Croatia and the Czech Republic, which is best known through Janáček's musical setting of it (the Glagolitic Mass). Interslavic language, a modernized and simplified form of Old Church Slavonic, largely based on material that the modern Slavic languages have in common. Its purpose is to facilitate communication between representatives of different Slavic nations and to allow people who do not know any Slavic language to communicate with Slavs. Because Old Church Slavonic had become too archaic and complex for everyday communication, Pan-Slavic language projects have been created from the 17th century onwards in order to provide the Slavs with a common literary language. Interslavic in its current form was standardized in 2011 after the merger of several older projects. See also Language family List of Slavic studies journals Outline of Slavic history and culture Slavic microlanguages Slavic names Slavic studies Notes Citations References General references Lockwood, W.B. A Panorama of Indo-European Languages. Hutchinson University Library, 1972. hardback, paperback. Marko Jesensek, The Slovene Language in the Alpine and Pannonian Language Area, 2005. External links Slavic dictionaries on Slavic Net Slavistik-Portal The Slavistics Portal (Germany) Fusional languages Indo-European languages