scrubber vs scrub brush

scrubber and scrub brush both are nouns.

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

As nouns, scrubber and scrub brush are synonyms defined as:

scrubber and scrub brush: a brush with short stiff bristles for heavy cleaning

Other synonyms of scrubber include scrubbing brush.

scrubber (noun)	scrub brush (noun)
a purifier that removes impurities from a gas	a brush with short stiff bristles for heavy cleaning
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)