Kelt vs Celt

Kelt and Celt both are nouns.

Word	Noun	Adjective	Verb	Adverb
Kelt	Yes	No	No	No
Celt	Yes	No	No	No

As nouns, Kelt and Celt are synonyms defined as:

Kelt and Celt: a member of a European people who once occupied Britain and Spain and Gaul prior to Roman times

Kelt (noun)	Celt (noun)
a member of a European people who once occupied Britain and Spain and Gaul prior to Roman times	a member of a European people who once occupied Britain and Spain and Gaul prior to Roman times