What is another word for gear mechanism?
Pronunciation: [ɡˈi͡ə mˈɛkənˌɪzəm] (IPA) 
Gear mechanism is a term used to describe the system of gears that work together to transmit power or motion from one component to another. There are many synonyms for gear mechanism, including gear train, gear system, gear assembly, and power transmission system. Other related terms include transmission, differential, and gearbox. Regardless of the specific term used, all gear mechanisms are designed to efficiently transfer torque between components while maintaining a consistent speed and direction of rotation. Whether found in a car engine, industrial machinery, or consumer products, gear mechanisms serve an essential function in transmitting power and enabling the smooth operation of countless machines and devices.
