Martinique vs island

Martinique and island both are nouns.

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

Martinique (noun)	island (noun)
an island in the eastern Caribbean in the Windward Islands; administered as an overseas region of France	a zone or area resembling an island
	a land mass (smaller than a continent) that is surrounded by water