Chipewyan vs Athabascan

Chipewyan and Athabascan both are nouns.

Word	Noun	Adjective	Verb	Adverb
Chipewyan	Yes	No	No	No
Athabascan	Yes	No	No	No

As nouns, Athabascan is a hypernym of Chipewyan; that is, Athabascan is a word with a broader meaning than Chipewyan:

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

Other hypernyms of Chipewyan include Athabaskan, Athapascan, Athapaskan, Athapaskan language.

As nouns, Athabascan is a hypernym of Chipewyan; that is, Athabascan is a word with a broader meaning than Chipewyan:

Chipewyan: a member of the Athapaskan people living in western Canada between Great Slave Lake and Hudson Bay
Athabascan: 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

Other hypernyms of Chipewyan include Athabaskan, Athapascan, Athapaskan.

Chipewyan (noun)	Athabascan (noun)
the language spoken by the Chipewyan	a group of Amerindian languages (the name coined by an American anthropologist, Edward Sapir)
a member of the Athapaskan people living in western Canada between Great Slave Lake and Hudson Bay	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