Sulawesi vs island

Sulawesi and island both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sulawesi	Yes	No	No	No
island	Yes	No	No	No

Sulawesi (noun)	island (noun)
a mountainous island in eastern Indonesia	a zone or area resembling an island
	a land mass (smaller than a continent) that is surrounded by water