Egadi Islands vs island

Egadi Islands and island both are nouns.

Word	Noun	Adjective	Verb	Adverb
Egadi Islands	Yes	No	No	No
island	Yes	No	No	No

Egadi Islands (noun)	island (noun)
a group of islands off the west coast of Sicily in the Mediterranean	a zone or area resembling an island
	a land mass (smaller than a continent) that is surrounded by water