Pacific Ocean vs Arafura Sea

Pacific Ocean and Arafura Sea both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pacific Ocean	Yes	No	No	No
Arafura Sea	Yes	No	No	No

Pacific Ocean (noun)	Arafura Sea (noun)
the largest ocean in the world	a part of the western Pacific Ocean to the north of Australia and to the south of New Guinea and the eastern islands of Indonesia