Kahoolawe vs island

Kahoolawe and island both are nouns.

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

Kahoolawe (noun)	island (noun)
an island of south-central Hawaii	a zone or area resembling an island
	a land mass (smaller than a continent) that is surrounded by water