Tuamotu Archipelago vs archipelago

Tuamotu Archipelago and archipelago both are nouns.

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

Tuamotu Archipelago (noun)	archipelago (noun)
a group of about 80 coral islands in French Polynesia	a group of many islands in a large body of water