Japan vs Kanmon Bridge

Japan and Kanmon Bridge both are nouns.

Word	Noun	Adjective	Verb	Adverb
Japan	Yes	No	No	No
Kanmon Bridge	Yes	No	No	No

Japan (noun)	Kanmon Bridge (noun)
a constitutional monarchy occupying the Japanese Archipelago; a world leader in electronics and automobile manufacture and ship building	a suspension bridge between Kyushu and Honshu
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