gearing vs wheelwork

gearing and wheelwork both are nouns.

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

As nouns, wheelwork is a hypernym of gearing; that is, wheelwork is a word with a broader meaning than gearing:

gearing: wheelwork consisting of a connected set of rotating gears by which force is transmitted or motion or torque is changed
wheelwork: mechanical device including an arrangement of wheel in a machine (especially a train of gears)

gearing (noun)	wheelwork (noun)
wheelwork consisting of a connected set of rotating gears by which force is transmitted or motion or torque is changed	mechanical device including an arrangement of wheel in a machine (especially a train of gears)