substitute
n//ˈsɐbstətjʉːt//substitut, avbytare, ersätta, substituera
A replacement or stand-in for something that achieves a similar result or purpose.
(sports) A player who is available to replace another if the need arises, and who may or may not actually do so.
(transitive) To use in place of something else, with the same function.
(transitive, formerly, _, proscribed, in the phrase "substitute X with/by Y") To use Y in place of X; to replace X with Y.