West Africa vs Africa

West Africa and Africa both are nouns.

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

West Africa (noun)	Africa (noun)
an area of western Africa between the Sahara Desert and the Gulf of Guinea	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