handwheel vs controller

handwheel and controller both are nouns.

Word	Noun	Adjective	Verb	Adverb
handwheel	Yes	No	No	No
controller	Yes	No	No	No

As nouns, controller is a hypernym of handwheel; that is, controller is a word with a broader meaning than handwheel:

handwheel: control consisting of a wheel whose rim serves as the handle by which a part is operated
controller: a mechanism that controls the operation of a machine

Other hypernyms of handwheel include control.

handwheel (noun)	controller (noun)
control consisting of a wheel whose rim serves as the handle by which a part is operated	a mechanism that controls the operation of a machine
a wheel worked by hand	someone who maintains and audits business accounts
	a person who directs and restrains