Caucasia vs geographical area

Caucasia and geographical area both are nouns.

Word	Noun	Adjective	Verb	Adverb
Caucasia	Yes	No	No	No
geographical area	Yes	No	No	No

Caucasia (noun)	geographical area (noun)
a large region between the Black and Caspian seas that contains the Caucasus Mountains; oil is its major resource	a demarcated area of the Earth