Republic of Burundi vs African nation

Republic of Burundi and African nation both are nouns.

Word	Noun	Adjective	Verb	Adverb
Republic of Burundi	Yes	No	No	No
African nation	Yes	No	No	No

Republic of Burundi (noun)	African nation (noun)
a landlocked republic in east central Africa on the northeastern shore of Lake Tanganyika	any one of the countries occupying the African continent