Commonwealth of Australia vs Cape York

Commonwealth of Australia and Cape York both are nouns.

Word	Noun	Adjective	Verb	Adverb
Commonwealth of Australia	Yes	No	No	No
Cape York	Yes	No	No	No

Commonwealth of Australia (noun)	Cape York (noun)
a nation occupying the whole of the Australian continent; Aboriginal tribes are thought to have migrated from southeastern Asia 20,000 years ago; first Europeans were British convicts sent there as a penal colony	the northern tip of Cape York Peninsula at the Torres Strait; the northernmost point of the Australian mainland