island vs Aegadean Islands

island and Aegadean Islands both are nouns.

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

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