Athapaskan vs Athapascan

Athapaskan and Athapascan both are nouns.

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

As nouns, Athapaskan and Athapascan are synonyms defined as:

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

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

As nouns, Athapaskan and Athapascan are synonyms defined as:

Athapaskan 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 Athapaskan include Athabascan, Athabaskan.

Athapaskan (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