commuting vs commutation

commuting and commutation both are nouns.

Word	Noun	Adjective	Verb	Adverb
commuting	Yes	No	No	No
commutation	Yes	No	No	No

As nouns, commuting and commutation are synonyms defined as:

commuting (noun)	commutation (noun)
the travel of a commuter	the travel of a commuter
	(law) the reduction in severity of a punishment imposed by law
	the act of putting one thing or person in the place of another:
	a warrant substituting a lesser punishment for a greater one