geartrain vs gearing

geartrain and gearing both are nouns.

Word	Noun	Adjective	Verb	Adverb
geartrain	Yes	No	No	No
gearing	Yes	No	No	No

As nouns, geartrain and gearing are synonyms defined as:

geartrain and gearing: wheelwork consisting of a connected set of rotating gears by which force is transmitted or motion or torque is changed

Other synonyms of geartrain include gear, power train, train.

geartrain (noun)	gearing (noun)
wheelwork consisting of a connected set of rotating gears by which force is transmitted or motion or torque is changed	wheelwork consisting of a connected set of rotating gears by which force is transmitted or motion or torque is changed