cut rate vs bargain rate

cut rate and bargain rate both are nouns.

Word	Noun	Adjective	Verb	Adverb
cut rate	Yes	No	No	No
bargain rate	Yes	No	No	No

As nouns, cut rate and bargain rate are synonyms defined as:

Other synonyms of cut rate include cheapness, cut price.

cut rate (noun)	bargain rate (noun)
a price below the standard price	a price below the standard price