Bochs is an emulator because it emulates i.e it TRIES to replicate HARDWARE capabilities for the software, whereas a simulator will modify software and does not concern for the hardware because it only needs to run that software as it should on a compatible hardware. Even if the simulated hardware does not support any other software that it should run on the original hardware. VIRTUALIZATION solutions or hypervisors are based on emulators whereas high graphics games that try to replicate FIGHTER jet flying is a simulator.

Bochs is an emulator because it emulates i.e it tries to replicate hardware capabilities for the software, whereas a simulator will modify software and does not concern for the hardware because it only needs to run that software as it should on a compatible hardware. Even if the simulated hardware does not support any other software that it should run on the original hardware. Virtualization solutions or hypervisors are based on emulators whereas high graphics games that try to replicate fighter jet flying is a simulator.