Internal Combustion Engine: The power source for traditional automobiles; it generates power by burning fuel inside the engine itself. Like how food fuels humans, gasoline fuels these engines.
Hybrid Vehicle: These are vehicles that use both an internal combustion engine and an electric motor for propulsion. They're kind of like someone who can speak two languages - they can operate in two different 'modes'.
Electric Vehicle (EV): These are vehicles powered entirely by electricity stored in rechargeable batteries or another energy storage device.