Saba vs island

Saba and island both are nouns.

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

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