scrubber

nouns

a worker who uses a scrub brush to clean a surface (usually a floor or deck)
scrubber
is derived from
scrub
is a type of (narrower)
a person who works at a specific occupation
"he is a good worker"
worker
a brush with short stiff bristles for heavy cleaning
scrub brush, scrubber, scrubbing brush
is derived from
scrub
a purifier that removes impurities from a gas
scrubber
is a type of (narrower)
an apparatus for removing impurities
purifier