Hebridean Isles vs Hebridean Islands

Hebridean Isles and Hebridean Islands both are nouns.

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

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

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

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

Hebridean Isles (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