borsch vs white borscht

borsch and white borscht both are nouns.

Word	Noun	Adjective	Verb	Adverb
borsch	Yes	No	No	No
white borscht	Yes	No	No	No

As nouns, white borscht is a hyponym of borsch; that is, white borscht is a word with a more specific, narrower meaning than borsch:

borsch: a Russian or Polish soup usually containing beet juice as a foundation
white borscht: a variant of sour rye soup made with wheat flour instead of soured rye flour.

borsch (noun)	white borscht (noun)
a Russian or Polish soup usually containing beet juice as a foundation	a variant of sour rye soup made with wheat flour instead of soured rye flour.