controller vs dial

controller and dial both are nouns.

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

As nouns, dial is a hyponym of controller; that is, dial is a word with a more specific, narrower meaning than controller:

controller (noun)	dial (noun)
a mechanism that controls the operation of a machine	the face of a timepiece; graduated to show the hours
someone who maintains and audits business accounts	a disc on a telephone that is rotated a fixed distance for each number called
a person who directs and restrains	the circular graduated indicator on various measuring instruments
	the control on a radio or television set that is used for tuning

controller (verb)	dial (verb)
	choose by means of a dial
	operate a dial to select a telephone number