Siouan vs Winnebago

Siouan and Winnebago both are nouns.

Word	Noun	Adjective	Verb	Adverb
Siouan	Yes	Yes	No	No
Winnebago	Yes	No	No	No

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

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

Siouan: a member of a group of North American Indian peoples who spoke a Siouan language and who ranged from Lake Michigan to the Rocky Mountains
Winnebago: a member of the Siouan-speaking people formerly living in eastern Wisconsin south of Green Bay; ally of the Menomini and enemy of the Fox and Sauk people

Siouan (noun)	Winnebago (noun)
a family of North American Indian languages spoken by the Sioux	the Siouan language spoken by the Winnebago
a member of a group of North American Indian peoples who spoke a Siouan language and who ranged from Lake Michigan to the Rocky Mountains	a member of the Siouan-speaking people formerly living in eastern Wisconsin south of Green Bay; ally of the Menomini and enemy of the Fox and Sauk people

Siouan (adjective)	Winnebago (adjective)
of or relating to the Sioux people or their language and culture