The noun has one meaning:
Meaning #1:
the language of the Quechua which was spoken by the Incas
Synonyms: Quechua, Quechuan, Quechuan language, Kechua
The adjective Kechuan has one meaning:
Meaning #1:
of or relating to the Quechua people or their language
Synonym: Quechuan
Pertains to nouns: Quechua (meaning #1), Quechua (meaning #2)
