Hebrides vs archipelago

Hebrides and archipelago both are nouns.

Word	Noun	Adjective	Verb	Adverb
Hebrides	Yes	No	No	No
archipelago	Yes	No	No	No

Hebrides (noun)	archipelago (noun)
a group of more than 500 islands off the western coast of Scotland	a group of many islands in a large body of water