island vs Saint Eustatius

island and Saint Eustatius both are nouns.

Word	Noun	Adjective	Verb	Adverb
island	Yes	No	No	No
Saint Eustatius	Yes	No	No	No

island (noun)	Saint Eustatius (noun)
a zone or area resembling an island	an island in the Netherlands Antilles
a land mass (smaller than a continent) that is surrounded by water