Iwo Jima vs Japan

Iwo Jima and Japan both are nouns.

Word	Noun	Adjective	Verb	Adverb
Iwo Jima	Yes	No	No	No
Japan	Yes	No	No	No

Iwo Jima (noun)	Japan (noun)
a bloody and prolonged operation on the island of Iwo Jima in which American marines landed and defeated Japanese defenders (February and March 1945)	a constitutional monarchy occupying the Japanese Archipelago; a world leader in electronics and automobile manufacture and ship building
the largest of the Volcano Islands of Japan	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