White Russia vs Republic of Belarus

White Russia and Republic of Belarus both are nouns.

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

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

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

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

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