Africa vs African nation

Africa and African nation both are nouns.

Word	Noun	Adjective	Verb	Adverb
Africa	Yes	No	No	No
African nation	Yes	No	No	No

Africa (noun)	African nation (noun)
the second largest continent; located to the south of Europe and bordered to the west by the South Atlantic and to the east by the Indian Ocean	any one of the countries occupying the African continent