Abyssinia vs African nation

Abyssinia and African nation both are nouns.

Word	Noun	Adjective	Verb	Adverb
Abyssinia	Yes	No	No	No
African nation	Yes	No	No	No

Abyssinia (noun)	African nation (noun)
Ethiopia is a republic in northeastern Africa on the Red Sea; formerly called Abyssinia	any one of the countries occupying the African continent