The Cornish language (in Cornish: Kernowek, Kernewek, Curnoack) is one of the
Brythonic group of
Celtic languages (Brythonic also includes
Welsh,
Breton, the extinct
Cumbric and perhaps the hypothetical
Ivernic). The
Celtic languages of
Scottish Gaelic,
Irish and
Manx are part of the separate
Goidelic group. Cornish shares about 80 asic vocabulary with Breton, 75% with Welsh, 35% with Irish, and 35% with
Scottish Gaelic. By comparison, Welsh shares about 70% with Breton. Cornish continued to function as a community language until the late 18th century, and was revived early in the 20th century.
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