bank discount vs discount rate

bank discount and discount rate both are nouns.

Word	Noun	Adjective	Verb	Adverb
bank discount	Yes	No	No	No
discount rate	Yes	No	No	No

As nouns, bank discount and discount rate are synonyms defined as:

bank discount and discount rate: interest on an annual basis deducted in advance on a loan

Other synonyms of bank discount include discount.

bank discount (noun)	discount rate (noun)
interest on an annual basis deducted in advance on a loan	interest on an annual basis deducted in advance on a loan
	the rate of interest set by the Federal Reserve that member banks are charged when they borrow money through the Federal Reserve System