An ambition and effort to equal, excel or surpass another; to compete or rival with some degree of success, especially through imitation
The low-level simulation of equipment or phenomena by artificial means, such as by new software modeling. Note that simulation may also allow an abstract high-level model.

Emulator, imitation of behavior of a computer or other electronic system with the help of another type of computer/system
Console emulator, a program that allows a computer or modern console to emulate another video game console
In-circuit emulator, a program used to emulate the processor in an diamond engagement rings embedded system, to aid in debugging
Hardware emulation, the use of special purpose hardware to emulate the behavior of a yet-to-be-built system, with greater speed than pure software emulation
Emulation for Logic Validation, used to emulate hardware in manufacturing full automation

Emulation (observational learning), a theory of comparative psychology
Socialist emulation website, a form of competition that was practiced in the Soviet Union
Gaussian process emulation, a special case of the Gaussian process in statistics
ST Emulous, a British tugboat
Whole brain emulation, aiming at mind uploading
Emulation (Schoelcher), a football club of Martinique, based in the westcoast-town