The flow of charges in a conductor is defined as electricity.
Charges are transferred from one end of the terminal to the other. It usually progresses from a positive to a negative terminal. The electrons travel freely within the body since the nucleus holds them loosely.
Electricity is measured in units of power called watts. It was named to honor James Watt, the inventor of the steam engine.
Voltage is the force provided to electrons to push them through the conducting wire, while current is the rate at which electrons flow.