mopping vs scrubbing

mopping and scrubbing both are nouns.

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

As nouns, scrubbing is a hypernym of mopping; that is, scrubbing is a word with a broader meaning than mopping:

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

Other hypernyms of mopping include scouring, scrub.

mopping (noun)	scrubbing (noun)
cleaning with a mop	the act of cleaning a surface by rubbing it with a brush and soap and water