Cameroun vs African country

Cameroun and African country both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cameroun	Yes	No	No	No
African country	Yes	No	No	No

Cameroun (noun)	African country (noun)
a republic on the western coast of central Africa; was under French and British control until 1960	any one of the countries occupying the African continent