rectify vs rectifier

rectify is not a noun while rectifier is a noun.

Word	Noun	Adjective	Verb	Adverb
rectify	No	No	Yes	No
rectifier	Yes	No	No	No

rectify (noun)	rectifier (noun)
	electrical device that transforms alternating into direct current
	a person who corrects or sets right

rectify (verb)	rectifier (verb)
set straight or right
make right or correct
reduce to a fine, unmixed, or pure state; separate from extraneous matter or cleanse from impurities
convert into direct current
bring, lead, or force to abandon a wrong or evil course of life, conduct, and adopt a right one
determine the length of