Hokkaido vs Japan

Hokkaido and Japan both are nouns.

Word	Noun	Adjective	Verb	Adverb
Hokkaido	Yes	No	No	No
Japan	Yes	No	No	No

Hokkaido (noun)	Japan (noun)
the second largest of the four main islands of Japan; to the north of Honshu	a constitutional monarchy occupying the Japanese Archipelago; a world leader in electronics and automobile manufacture and ship building
	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