Africa vs Portuguese Guinea

Africa and Portuguese Guinea both are nouns.

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

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