recuse vs recusal

recuse is not a noun while recusal is a noun.

Word	Noun	Adjective	Verb	Adverb
recuse	No	No	Yes	No
recusal	Yes	No	No	No

recuse (noun)	recusal (noun)
	(law) the disqualification of a judge or jury by reason of prejudice or conflict of interest; a judge can be recused by objections of either party or judges can disqualify themselves

recuse (verb)	recusal (verb)
challenge or except to a judge as being incompetent or interested, in canon and civil law
disqualify oneself (as a judge) in a particular case