African nation vs Southern Rhodesia

African nation and Southern Rhodesia both are nouns.

Word	Noun	Adjective	Verb	Adverb
African nation	Yes	No	No	No
Southern Rhodesia	Yes	No	No	No

African nation (noun)	Southern Rhodesia (noun)
any one of the countries occupying the African continent	a landlocked republic in south central Africa formerly called Rhodesia; achieved independence from the United Kingdom in 1980