Visayas vs island

Visayas and island both are nouns.

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

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