Africa vs Central Africa

Africa and Central Africa both are nouns.

Word	Noun	Adjective	Verb	Adverb
Africa	Yes	No	No	No
Central Africa	Yes	No	No	No

Africa (noun)	Central Africa (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 landlocked country in central Africa; formerly under French control; became independent in 1960