Caucasian race vs Caucasian

Caucasian race and Caucasian both are nouns.

Word	Noun	Adjective	Verb	Adverb
Caucasian race	Yes	No	No	No
Caucasian	Yes	Yes	No	No

Caucasian race (noun)	Caucasian (noun)
a light-skinned race	a number of languages spoken in the Caucasus that are unrelated to languages spoken elsewhere
	a person of European descent with a light-skinned or pale complexion

Caucasian race (adjective)	Caucasian (adjective)
	of or relating to the geographical region of Caucasia
	of or relating to Caucasian people