<human>:  What is the difference between a mechanical engineer and an electrical engineer?
<bot>: The primary difference between a mechanical engineer and an electrical engineer is that a mechanical engineer focuses on designing and building physical components, while an electrical engineer focuses on designing and building components related to electricity. For example, a mechanical engineer may design the body of a car while an electrical engineer may design and build the electrical components inside the car such as the wiring, ignition system, and fuel system.