Mindoro vs island

Mindoro and island both are nouns.

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

Mindoro (noun)	island (noun)
a mountainous island in the central Philippines	a zone or area resembling an island
	a land mass (smaller than a continent) that is surrounded by water