The ignition switch is a critical component in any vehicle. It is responsible for starting the engine by providing the power to the starter motor. In many cases, the ignition switch is also used to control various electrical systems in the car. There are several synonyms for the term ignition switch, including key switch, starter switch, ignition key, and starter button. All of these terms refer to the same component and are used interchangeably in the automotive industry. Whether you call it an ignition switch or a key switch, it is important to keep this component in good working condition to ensure proper vehicle operation.