archipelago vs Arctic Archipelago

archipelago and Arctic Archipelago both are nouns.

Word	Noun	Adjective	Verb	Adverb
archipelago	Yes	No	No	No
Arctic Archipelago	Yes	No	No	No

archipelago (noun)	Arctic Archipelago (noun)
a group of many islands in a large body of water	all the islands that lie to the north of mainland Canada and the Arctic Circle