is a specific kind of: device.

is a broader term that covers: aerial, antenna, transmitting aerial | attenuator | ballast, light ballast | battery, electric battery | bimetallic strip | brush | capacitance, capacitor, condenser, electrical condenser | cell, electric cell | circuit, electric circuit, electrical circuit | board, control board, control panel, instrument panel, panel | distributer, distributor, electrical distributor | electrograph | electrostatic generator, electrostatic machine, Van de Graaff generator, Wimshurst machine | filter | flasher | electrical fuse, fuse, safety fuse | inductance, inductor | jack | load | male plug, plug | Cottrell precipitator, electrostatic precipitator, precipitator | reactor | rectifier | electrical relay, relay | resistance, resistor | security, security measure, security system | Segway, Segway HT, Segway Human Transporter | solar array, solar battery, solar panel | spark arrester | plug, spark plug, sparking plug | suppresser, suppressor | transducer | transformer | transponder | zapper ... show more.

has as a part: pole, terminal.