White Russia vs Belorussia

White Russia and Belorussia both are nouns.

Word	Noun	Adjective	Verb	Adverb
White Russia	Yes	No	No	No
Belorussia	Yes	No	No	No

As nouns, White Russia and Belorussia are synonyms defined as:

White Russia and Belorussia: a landlocked republic in eastern Europe; formerly a European soviet

Other synonyms of White Russia include Belarus, Byelarus, Byelorussia, Republic of Belarus.

White Russia (noun)	Belorussia (noun)
a landlocked republic in eastern Europe; formerly a European soviet	a landlocked republic in eastern Europe; formerly a European soviet