Maldive Islands vs Indian Ocean

Maldive Islands and Indian Ocean both are nouns.

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

Maldive Islands (noun)	Indian Ocean (noun)
a group of about 1,200 small coral islands (about 220 inhabited) in the Indian ocean	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