What is another word for reduction gear?
Pronunciation: [ɹɪdˈʌkʃən ɡˈi͡ə] (IPA) 
Reduction gear, also known as a gear reducer, is a mechanical device that reduces the velocity and increases the torque of a machine's output shaft. There are a few synonyms for reduction gear, including gearbox, gearhead, and speed reducer. Gearbox refers to the casing that contains one or more gears, while gearhead refers to a device that is designed to connect a motor to a mechanical load. Speed reducer is a more general term that can refer to any mechanical device that reduces the rotational speed of a machine's output. While these terms may refer to slightly different aspects of the reduction gear, they can generally be used interchangeably to refer to the same device.
