scrubbing vs scouring

scrubbing and scouring both are nouns.

Word	Noun	Adjective	Verb	Adverb
scrubbing	Yes	No	No	No
scouring	Yes	No	No	No

As nouns, scrubbing and scouring are synonyms defined as:

scrubbing and scouring: the act of cleaning a surface by rubbing it with a brush and soap and water

Other synonyms of scrubbing include scrub.

scrubbing (noun)	scouring (noun)
the act of cleaning a surface by rubbing it with a brush and soap and water	the act of cleaning a surface by rubbing it with a brush and soap and water
	moving over territory to search for something