Republic of Namibia vs Africa

Republic of Namibia and Africa both are nouns.

Word	Noun	Adjective	Verb	Adverb
Republic of Namibia	Yes	No	No	No
Africa	Yes	No	No	No

Republic of Namibia (noun)	Africa (noun)
a republic in southwestern Africa on the south Atlantic coast (formerly called South West Africa); achieved independence from South Africa in 1990; the greater part of Namibia forms part of the high Namibian plateau of South Africa	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