Vieques vs island

Vieques and island both are nouns.

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

Vieques (noun)	island (noun)
a small island off the coast of Puerto Rico used for target practice by the United States Navy	a zone or area resembling an island
	a land mass (smaller than a continent) that is surrounded by water