island vs St. Maarten

island and St. Maarten both are nouns.

Word	Noun	Adjective	Verb	Adverb
island	Yes	No	No	No
St. Maarten	Yes	No	No	No

island (noun)	St. Maarten (noun)
a zone or area resembling an island	an island in the western Leeward Islands; administered jointly by France and the Netherlands
a land mass (smaller than a continent) that is surrounded by water