island vs Sicily

island and Sicily both are nouns.

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

island (noun)	Sicily (noun)
a zone or area resembling an island	the Italian region on the island of Sicily
a land mass (smaller than a continent) that is surrounded by water	the largest island in the Mediterranean