Athabaskan vs Athapascan

Athabaskan and Athapascan both are nouns.

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

As nouns, Athabaskan and Athapascan are synonyms defined as:

Athabaskan and Athapascan: a group of Amerindian languages (the name coined by an American anthropologist, Edward Sapir)

Other synonyms of Athabaskan include Athabascan, Athapaskan, Athapaskan language.

As nouns, Athabaskan and Athapascan are synonyms defined as:

Athabaskan and Athapascan: 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 synonyms of Athabaskan include Athabascan, Athapaskan.

Athabaskan (noun)	Athapascan (noun)
a group of Amerindian languages (the name coined by an American anthropologist, Edward Sapir)	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	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