Africa vs Republic of Angola

Africa and Republic of Angola both are nouns.

Word	Noun	Adjective	Verb	Adverb
Africa	Yes	No	No	No
Republic of Angola	Yes	No	No	No

Africa (noun)	Republic of Angola (noun)
the second largest continent; located to the south of Europe and bordered to the west by the South Atlantic and to the east by the Indian Ocean	a republic in southwestern Africa on the Atlantic Ocean; achieved independence from Portugal in 1975 and was the scene of civil war until 1990