Cape York vs Cape York Peninsula

Cape York and Cape York Peninsula both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cape York	Yes	No	No	No
Cape York Peninsula	Yes	No	No	No

Cape York (noun)	Cape York Peninsula (noun)
the northern tip of Cape York Peninsula at the Torres Strait; the northernmost point of the Australian mainland	a peninsula in Queensland in northeastern Australia between the Gulf of Carpentaria and the Coral Sea