Africa vs eastern hemisphere

Africa and eastern hemisphere both are nouns.

Word	Noun	Adjective	Verb	Adverb
Africa	Yes	No	No	No
eastern hemisphere	Yes	No	No	No

Africa (noun)	eastern hemisphere (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	the hemisphere that includes Eurasia and Africa and Australia