island vs Baffin Island

island and Baffin Island both are nouns.

Word	Noun	Adjective	Verb	Adverb
island	Yes	No	No	No
Baffin Island	Yes	No	No	No

island (noun)	Baffin Island (noun)
a zone or area resembling an island	the 5th largest island and the largest island of Arctic Canada; lies between Greenland and Hudson Bay
a land mass (smaller than a continent) that is surrounded by water