island vs Saba

island and Saba both are nouns.

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

island (noun)	Saba (noun)
a zone or area resembling an island	a island in the Netherlands Antilles that is the top of an extinct volcano
a land mass (smaller than a continent) that is surrounded by water