discount vs pass off

discount is a noun but pass off is not a noun.

Word	Noun	Adjective	Verb	Adverb
discount	Yes	No	Yes	No
pass off	No	No	Yes	No

As verbs, pass off is a hyponym of discount; that is, pass off is a word with a more specific, narrower meaning than discount:

discount (noun)	pass off (noun)
the act of reducing the selling price of merchandise
an amount or percentage deducted
interest on an annual basis deducted in advance on a loan
a refund of some fraction of the amount paid

discount (verb)	pass off (verb)
bar from attention or consideration	expel (gases or odors)
give a reduction in price on	come to pass
	disappear gradually
	disregard
	cause to be circulated and accepted in a false character or identity
	be accepted as something or somebody in a false character or identity