Eritrea vs African country

Eritrea and African country both are nouns.

Word	Noun	Adjective	Verb	Adverb
Eritrea	Yes	No	No	No
African country	Yes	No	No	No

Eritrea (noun)	African country (noun)
an African country to the north of Ethiopia on the Red Sea; achieved independence from Ethiopia in 1993	any one of the countries occupying the African continent