Chippewaian vs Athapascan

Chippewaian and Athapascan both are nouns.

Word	Noun	Adjective	Verb	Adverb
Chippewaian	Yes	No	No	No
Athapascan	Yes	No	No	No

As nouns, Athapascan is a hypernym of Chippewaian; that is, Athapascan is a word with a broader meaning than Chippewaian:

Chippewaian: the language spoken by the Chipewyan
Athapascan: a group of Amerindian languages (the name coined by an American anthropologist, Edward Sapir)

Other hypernyms of Chippewaian include Athabascan, Athabaskan, Athapaskan, Athapaskan language.

Chippewaian (noun)	Athapascan (noun)
the language spoken by the Chipewyan	a group of Amerindian languages (the name coined by an American anthropologist, Edward Sapir)
	a member of any of the North American Indian groups speaking an Athapaskan language and living in the subarctic regions of western Canada and central Alaska