Aegadian Islands vs Aegadean Islands

Aegadian Islands and Aegadean Islands both are nouns.

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

As nouns, Aegadian Islands and Aegadean Islands are synonyms defined as:

Aegadian Islands and Aegadean Islands: a group of islands off the west coast of Sicily in the Mediterranean

Other synonyms of Aegadian Islands include Aegadean Isles, Aegates, Egadi Islands, Isole Egadi.

Aegadian Islands (noun)	Aegadean Islands (noun)
islands west of Sicily (now known as the Egadi Islands) where the Romans won a naval victory over the Carthaginians that ended the first Punic War in 241 BC	a group of islands off the west coast of Sicily in the Mediterranean
a group of islands off the west coast of Sicily in the Mediterranean