Cape York Peninsula vs Cape York

Cape York Peninsula and Cape York both are nouns.

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

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