arbitrational vs arbitration

arbitrational is not a noun while arbitration is a noun.

Word	Noun	Adjective	Verb	Adverb
arbitrational	No	Yes	No	No
arbitration	Yes	No	No	No

arbitrational (noun)	arbitration (noun)
	the act of deciding as an arbiter; giving authoritative judgment
	(law) the hearing and determination of a dispute by an impartial referee agreed to by both parties (often used to settle disputes between labor and management)

arbitrational (adjective)	arbitration (adjective)
relating to or resulting from arbitration