African nation vs Madagascar

African nation and Madagascar both are nouns.

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

African nation (noun)	Madagascar (noun)
any one of the countries occupying the African continent	a republic on the island of Madagascar; achieved independence from France in 1960
	an island in the Indian Ocean off the southeastern coast of Africa; the 4th largest island in the world