Wilkes Land vs Antarctic continent

Wilkes Land and Antarctic continent both are nouns.

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

Wilkes Land (noun)	Antarctic continent (noun)
a coastal region of Antarctica on the Indian Ocean to the south of Australia; most of the territory is claimed by Australia	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