arbitrament vs arbitration

arbitrament and arbitration both are nouns.

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

As nouns, arbitrament and arbitration are synonyms defined as:

arbitrament and arbitration: the act of deciding as an arbiter; giving authoritative judgment

Other synonyms of arbitrament include arbitrement.

arbitrament (noun)	arbitration (noun)
the act of deciding as an arbiter; giving authoritative judgment	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)