The term “transmission” is used for a device that is found in between the clutch and the propeller shaft. It could be a gearbox, a torque converter, overdrive, fluid push, or hydraulic drive. Standard gearboxes commonly have two sets of gears: input and output. the input & the output. https://gearbox17147.activosblog.com/32798754/considerations-to-know-about-gearbox