Algonquian vs Arapahoe

Algonquian and Arapahoe both are nouns.

Word	Noun	Adjective	Verb	Adverb
Algonquian	Yes	Yes	No	No
Arapahoe	Yes	No	No	No

As nouns, Arapahoe is a hyponym of Algonquian; that is, Arapahoe is a word with a more specific, narrower meaning than Algonquian:

Algonquian: family of North American Indian languages spoken from Labrador to South Carolina and west to the Great Plains
Arapahoe: the Algonquian language spoken by the Arapaho

As nouns, Arapahoe is a hyponym of Algonquian; that is, Arapahoe is a word with a more specific, narrower meaning than Algonquian:

Algonquian: a member of any of the North American Indian groups speaking an Algonquian language and originally living in the subarctic regions of eastern Canada; many Algonquian tribes migrated south into the woodlands from the Mississippi River to the Atlantic coast
Arapahoe: a member of a tribe of Plains Indians formerly inhabiting eastern Colorado and Wyoming (now living in Oklahoma and Wyoming)

Algonquian (noun)	Arapahoe (noun)
family of North American Indian languages spoken from Labrador to South Carolina and west to the Great Plains	the Algonquian language spoken by the Arapaho
a member of any of the North American Indian groups speaking an Algonquian language and originally living in the subarctic regions of eastern Canada; many Algonquian tribes migrated south into the woodlands from the Mississippi River to the Atlantic coast	a member of a tribe of Plains Indians formerly inhabiting eastern Colorado and Wyoming (now living in Oklahoma and Wyoming)

Algonquian (adjective)	Arapahoe (adjective)
of or relating to an Algonquian tribe or its people or language