commutation

noun

1.
the travel of a commuter
commuting
Derived from:
commute
2.
a warrant substituting a lesser punishment for a greater one
Derived from:
commute
3.
(law) the reduction in severity of a punishment imposed by law
re-sentencing
Derived from:
commute
4.
the act of putting one thing or person in the place of another:
exchange substitution
Derived from:
commute