Baffin Island vs island

Baffin Island and island both are nouns.

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

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