island vs Islay

island and Islay both are nouns.

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

island (noun)	Islay (noun)
a zone or area resembling an island	an island of western Scotland at the southern end of the Inner Hebrides
a land mass (smaller than a continent) that is surrounded by water