archipelago vs Aleutians

archipelago and Aleutians both are nouns.

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

archipelago (noun)	Aleutians (noun)
a group of many islands in a large body of water	an archipelago in the North Pacific extending southwest from Alaska