Portuguese Guinea vs Africa

Portuguese Guinea and Africa both are nouns.

Word	Noun	Adjective	Verb	Adverb
Portuguese Guinea	Yes	No	No	No
Africa	Yes	No	No	No

Portuguese Guinea (noun)	Africa (noun)
a republic on the northwestern coast of Africa; recognized as independent by Portugal in 1974	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