Republic of Sierra Leone vs Africa

Republic of Sierra Leone and Africa both are nouns.

Word	Noun	Adjective	Verb	Adverb
Republic of Sierra Leone	Yes	No	No	No
Africa	Yes	No	No	No

Republic of Sierra Leone (noun)	Africa (noun)
a republic in West Africa; achieved independence from the United Kingdom in 1961	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