Differentiate between Simulator and Emulator?

Below are a few differences between Simulator and Emulator

Basis of difference	Simulator	Emulator
Concept	Simulation is a process which involves modeling the underlying the ongoing state of the target.	Emulation can be defined as the process of imitating the outwardly observable behavior to match a target which already exists.
Definition	A simulator is an environment which helps to model	An emulator basically helps to replicate the existing environment
Field of functionality	It functions on the same host	It functions on a different host
Basic use	It performs operations of the other software where both the software has the same internal states.	An emulator is basically used to replace that software which is original.

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