名词有：
change,commutation,exchange,interchange,shift,substitution,switch,trade,transposition,swap,changeover,conversion,metamorphosis,mutation,shift,transfiguration,transformation,translation,transmogrification,transmutation,transubstantiation,alteration,modification,mutation,permutation,variation,passage,shift,transit,transition.
动词有：
commute,exchange,interchange,shift,substitute,switch,trade,shift,switch,alter,modify,mutate,turn,vary.