Spanish Guinea vs African nation

Spanish Guinea and African nation both are nouns.

Word	Noun	Adjective	Verb	Adverb
Spanish Guinea	Yes	No	No	No
African nation	Yes	No	No	No

Spanish Guinea (noun)	African nation (noun)
a country of west central Africa (including islands in the Gulf of Guinea); became independent from Spain in 1968	any one of the countries occupying the African continent