Republic of Botswana vs African nation

Republic of Botswana and African nation both are nouns.

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

Republic of Botswana (noun)	African nation (noun)
a landlocked republic in south-central Africa that became independent from British control in the 1960s	any one of the countries occupying the African continent