island vs Bisayas

island and Bisayas both are nouns.

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

island (noun)	Bisayas (noun)
a zone or area resembling an island	group of islands in the central Philippines
a land mass (smaller than a continent) that is surrounded by water