Antarctic continent vs Wilkes Land

Antarctic continent and Wilkes Land both are nouns.

Word	Noun	Adjective	Verb	Adverb
Antarctic continent	Yes	No	No	No
Wilkes Land	Yes	No	No	No

Antarctic continent (noun)	Wilkes Land (noun)
an extremely cold continent at the south pole almost entirely below the Antarctic Circle; covered by an ice cap up to 13,000 feet deep	a coastal region of Antarctica on the Indian Ocean to the south of Australia; most of the territory is claimed by Australia