simulation

nouns

the act of imitating the behavior of some situation or some process by means of something suitably analogous (especially for the purpose of study or personnel training)
is a type of (narrower)
the act of representing something (usually on a smaller scale)
(computer science) the technique of representing the real world by a computer program
"a simulation should imitate the internal processes and not merely the results of the thing being simulated"
is derived from
representation of something (sometimes on a smaller scale)
the act of giving a false appearance
"his conformity was only pretending"
is derived from