White Russia vs Belarus

White Russia and Belarus both are nouns.

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

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

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

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

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