Indian Ocean vs Maldive Islands

Indian Ocean and Maldive Islands both are nouns.

Word	Noun	Adjective	Verb	Adverb
Indian Ocean	Yes	No	No	No
Maldive Islands	Yes	No	No	No

Indian Ocean (noun)	Maldive Islands (noun)
the 3rd largest ocean; bounded by Africa on the west, Asia on the north, Australia on the east and merging with the Antarctic Ocean to the south	a group of about 1,200 small coral islands (about 220 inhabited) in the Indian ocean