scrub vs scrubber

scrub and scrubber both are nouns.

Word	Noun	Adjective	Verb	Adverb
scrub	Yes	Yes	Yes	No
scrubber	Yes	No	No	No

scrub (noun)	scrubber (noun)
the act of cleaning a surface by rubbing it with a brush and soap and water	a purifier that removes impurities from a gas
dense vegetation consisting of stunted trees or bushes	a brush with short stiff bristles for heavy cleaning
	a worker who uses a scrub brush to clean a surface (usually a floor or deck)

scrub (adjective)	scrubber (adjective)
(of domestic animals) not selectively bred

scrub (verb)	scrubber (verb)
wash thoroughly
clean with hard rubbing
postpone indefinitely or annul something that was scheduled