geographic region vs Wilkes Land

geographic region and Wilkes Land both are nouns.

Word	Noun	Adjective	Verb	Adverb
geographic region	Yes	No	No	No
Wilkes Land	Yes	No	No	No

geographic region (noun)	Wilkes Land (noun)
a demarcated area of the Earth	a coastal region of Antarctica on the Indian Ocean to the south of Australia; most of the territory is claimed by Australia