Nubia vs geographical region

Nubia and geographical region both are nouns.

Word	Noun	Adjective	Verb	Adverb
Nubia	Yes	No	No	No
geographical region	Yes	No	No	No

Nubia (noun)	geographical region (noun)
an ancient region of northeastern Africa (southern Egypt and northern Sudan) on the Nile; much of Nubia is now under Lake Nasser	a demarcated area of the Earth