Kassite language vs Cassite language

Kassite language and Cassite language both are nouns.

Word	Noun	Adjective	Verb	Adverb
Kassite language	Yes	No	No	No
Cassite language	Yes	No	No	No

As nouns, Kassite language and Cassite language are synonyms defined as:

Kassite language and Cassite language: an ancient language spoken by the Kassites

Other synonyms of Kassite language include Cassite, Kassite.

Kassite language (noun)	Cassite language (noun)
an ancient language spoken by the Kassites	an ancient language spoken by the Kassites