replacement

(n) the act of furnishing an equivalent person or thing in the place of another
- replacing the star will not be easy
replacing,
(n) someone who takes the place of another person alternate, surrogate,
(n) an event in which one thing is substituted for another
- the replacement of lost blood by a transfusion of donor blood
permutation, substitution, switch, transposition,
(n) a person or thing that takes or can take the place of another substitute,
(n) filling again by supplying what has been used up refilling, replenishment, renewal,
(n) a person who follows next in order
- he was President Lincoln's successor
successor,

replacing alternate surrogate permutation substitution switch transposition substitute refilling replenishment renewal successor

replacement cost