Japan vs Pacific Ocean

Japan and Pacific Ocean both are nouns.

Word	Noun	Adjective	Verb	Adverb
Japan	Yes	No	No	No
Pacific Ocean	Yes	No	No	No

Japan (noun)	Pacific Ocean (noun)
a constitutional monarchy occupying the Japanese Archipelago; a world leader in electronics and automobile manufacture and ship building	the largest ocean in the world
a string of more than 3,000 islands to the east of Asia extending 1,300 miles between the Sea of Japan and the western Pacific Ocean