Sometimes the two words may be used interchangeably, as "electrical/electric shock". Electric is a Adjective and Electricity is a Noun. Electricity is the power running electric motors. Electricity is made and controlled.

You use electric in front of nouns to talk about particular machines or devices that use electricity. The boat runs on an electric motor. My dentist recommends I get an electric toothbrush. You use electrical when you are talking in a more general way about machines, devices, or systems that use or produce electricity.