What is the difference between a steam train and a electric train?

A steam train is powered by steam generated from boiling water, typically using coal or wood as fuel, which drives a piston to turn the wheels. In contrast, an electric train relies on electricity supplied through overhead wires or an electrified track, using electric motors for propulsion. Steam trains are generally older technology and are often associated with historical railways, while electric trains are more efficient, faster, and commonly used in modern rail systems. Additionally, electric trains produce less pollution during operation compared to steam trains.