commutation
noun
com·mu·ta·tion
| \ ˌkäm-yə-ˈtā-shən
, -yü-\
, -yü-\
Definition of commutation
2
: replacement
specifically
: a substitution of one form of payment or charge for another
a commutation by money payment for the exacted service
3
: a change of a legal penalty or punishment to a lesser one
commutation of a death sentence
4
: an act or process of commuting
… a ridge of hills makes daily commutation to San Francisco arduous. — The New York Times
5
: the action of commutating