escape wheel vs cogwheel

escape wheel and cogwheel both are nouns.

Word	Noun	Adjective	Verb	Adverb
escape wheel	Yes	No	No	No
cogwheel	Yes	No	No	No

As nouns, cogwheel is a hypernym of escape wheel; that is, cogwheel is a word with a broader meaning than escape wheel:

escape wheel: gear that engages a rocking lever
cogwheel: a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion

Other hypernyms of escape wheel include gear, gear wheel, geared wheel.

escape wheel (noun)	cogwheel (noun)
gear that engages a rocking lever	a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion