controller vs accountant

controller and accountant both are nouns.

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

As nouns, controller and accountant are synonyms defined as:

controller and accountant: someone who maintains and audits business accounts

Other synonyms of controller include comptroller.

controller (noun)	accountant (noun)
a mechanism that controls the operation of a machine	someone who maintains and audits business accounts
someone who maintains and audits business accounts
a person who directs and restrains