The words Celt and Celtic can have a variety of meanings.

Sometimes a pronunciation distinction is maintained - see Pronunciation of Celtic. The following may be pronounced either /kelt(ik)/ or /selt(ik)/, but in academic use there is a clear preference for /kelt(ik)/:

• European Celtic people, either ancient or Modern Celts
• Celtic languages, descending from the Proto-Celtic language, spoken by these people and their modern descendants
• Celtic Congress
• Celtic League (political organisation)
• Celtic mythology
• Celtici, Celts from ancient Lusitania (modern day Portugal). (See also Celtiberians for a Celtic people on the Iberian peninsula)
• Celtic music, referring to folk music that originated from "Celtic" cultures.
• Celtic nations The Irish Republic, Isle of Man, Northern Ireland, Scotland, Wales, Cornwall, Brittany and Galicia.
• Celtic art, cultural art that avoids straight lines and only occasionally uses symmetry, or knotwork that is typically recognizable by interlocking lines and figures
• Celtic law
• Celtic Christianity
• Celtic calendar
• Pan-Celticism
• Celtic Sea
• Celtic League (rugby union)
• Celtic Alliance of America The Celtic Alliance of America was formed to raise awareness within the U.S. to the problems facing the Irish, Scottish, Cornish, and Welsh nations struggle for freedom and equality.

The following should only be pronounced /selt(ik)/:

• Celtic Football Club of Glasgow, Scotland
• Stalybridge Celtic Football Club of Stalybridge, England
• Lurgan Celtic Football Club of Lurgan, County Armagh, Northern Ireland
• Boston Celtics professional basketball team
• Celt (tool), a type of stone tool.

Celtic | Celtic