Japan vs Japanese language

Japan and Japanese language both are nouns.

Word	Noun	Adjective	Verb	Adverb
Japan	Yes	No	No	No
Japanese language	Yes	No	No	No

Japan (noun)	Japanese language (noun)
a constitutional monarchy occupying the Japanese Archipelago; a world leader in electronics and automobile manufacture and ship building	the language (usually considered to be Altaic) spoken by the Japanese
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