Replacement

n.	1.	The act of replacing.
	2.	(Crystallog.) The removal of an edge or an angle by one or more planes.

Noun	1.	replacement - an event in which one thing is substituted for another; "the replacement of lost blood by a transfusion of donor blood" Synonyms: permutation, substitution, switch, transposition
	2.	replacement - the act of furnishing an equivalent person or thing in the place of another; "replacing the star will not be easy" Synonyms: replacing
	3.	replacement - someone who takes the place of another person Synonyms: alternate, surrogate
	4.	replacement - a person or thing that takes or can take the place of another Synonyms: substitute
	5.	replacement - filling again by supplying what has been used up Synonyms: refilling, replenishment, renewal
	6.	replacement - a person who follows next in order; "he was President Lincoln's successor" Synonyms: successor

agency, agent, alternative, analogy, backup, backup man, change, changeling, commutation, comparison, copy, counterfeit, delegation, deputation, deputy, deputyship, descendant, displacement, double, dummy, equal, equivalent, ersatz, exchange, fake, fill-in, ghost, ghostwriter, heir, imitation, improvement, inheritor, instauration, locum, locum tenens, makeshift, metaphor, metonymy, next best thing, personnel, phony, pinch hitter, posterity, power of attorney, quid pro quo, reactivation, reconstitution, reconversion, redintegration, reenactment, reestablishment, reformation, rehabilitation, reinstatement, reinstation, reinstitution, reinvestiture, reinvestment, relief, representation, representative, reserves, restitution, restoration, reversion, ringer, second string, secondary, sign, spares, stand-in, sub, subrogation, substituent, substitution, succedaneum, successor, supersedence, superseder, superseding, supersedure, supersession, supplantation, supplanter, supplanting, supplantment, surrogate, switch, symbol, synecdoche, third string, tit for tat, token, utility player, vicar, vicariousness, vice-president, vice-regent