Cebu vs island

Cebu and island both are nouns.

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

Cebu (noun)	island (noun)
an important seaport on the island of Cebu in the Philippines	a zone or area resembling an island
one of the Visayan islands of the central Philippines; important for its fine harbor	a land mass (smaller than a continent) that is surrounded by water