Angola vs African country

Angola and African country both are nouns.

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

Angola (noun)	African country (noun)
a republic in southwestern Africa on the Atlantic Ocean; achieved independence from Portugal in 1975 and was the scene of civil war until 1990	any one of the countries occupying the African continent