refusal vs refuse

refusal and refuse both are nouns.

Word	Noun	Adjective	Verb	Adverb
refusal	Yes	No	No	No
refuse	Yes	No	Yes	No

refusal (noun)	refuse (noun)
a message refusing to accept something that is offered	food that is discarded (as from a kitchen)
the act of refusing

refusal (verb)	refuse (verb)
	show unwillingness towards
	not accept as true
	refuse to let have
	refuse entrance or membership
	elude, especially in a baffling way
	resist immunologically the introduction of some foreign tissue or organ