Siouan vs Rain-in-the-Face

Siouan and Rain-in-the-Face both are nouns.

Word	Noun	Adjective	Verb	Adverb
Siouan	Yes	Yes	No	No
Rain-in-the-Face	Yes	No	No	No

Siouan (noun)	Rain-in-the-Face (noun)
a family of North American Indian languages spoken by the Sioux	a chief of the Sioux; he was with Sitting Bull and others at the Battle of Little Bighorn (1876) when General Custer's troops were massacred (1835-1905)
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

Siouan (adjective)	Rain-in-the-Face (adjective)
of or relating to the Sioux people or their language and culture