substitution, permutation, transposition, replacement, switch -- (an event in which one thing is substituted for another; "the replacement of lost blood by a transfusion of donor blood")
permutation -- (the act of changing the arrangement of a given number of elements)
permutation -- (complete change in character or condition; "the permutations...taking place in the physical world"- Henry Miller)
permutation -- (act of changing the lineal order of objects in a group)
(Sound)
