island vs Santa Catalina

island and Santa Catalina both are nouns.

Word	Noun	Adjective	Verb	Adverb
island	Yes	No	No	No
Santa Catalina	Yes	No	No	No

island (noun)	Santa Catalina (noun)
a zone or area resembling an island	an island resort in the Pacific off the southwestern coast of California
a land mass (smaller than a continent) that is surrounded by water