What is another word for pinion and ring gear?
Pronunciation: [pˈɪni͡ən and ɹˈɪŋ ɡˈi͡ə] (IPA) 
Pinion and ring gear is a pair of gears that are used to transmit power and torque from the input shaft to the output shaft. These gears are commonly found in automotive drivetrains, as well as in machinery and industrial equipment. The pinion gear is the smaller one, while the ring gear is the larger one. Synonyms for pinion and ring gear include crown wheel and pinion, ring and pinion gear set, bevel gear set, and differential gear set. These terms all refer to the same thing: a pair of gears that work together to transfer power and torque between two shafts.
