Hebrides vs Hebridean Islands

Hebrides and Hebridean Islands both are nouns.

Word	Noun	Adjective	Verb	Adverb
Hebrides	Yes	No	No	No
Hebridean Islands	Yes	No	No	No

As nouns, Hebrides and Hebridean Islands are synonyms defined as:

Hebrides and Hebridean Islands: a group of more than 500 islands off the western coast of Scotland

Other synonyms of Hebrides include Hebridean Isles, Western Islands, Western Isles.

Hebrides (noun)	Hebridean Islands (noun)
a group of more than 500 islands off the western coast of Scotland	a group of more than 500 islands off the western coast of Scotland