mask vs masking

mask and masking both are nouns.

Word	Noun	Adjective	Verb	Adverb
mask	Yes	No	Yes	No
masking	Yes	No	No	No

mask (noun)	masking (noun)
activity that tries to conceal something	the act of concealing the existence of something by obstructing the view of it
a covering to disguise or conceal the face	scenery used to block the audience's view of parts of the stage that should not be seen
a protective covering worn over the face	the blocking of one sensation resulting from the presence of another sensation
a party of guests wearing costumes and masks

mask (verb)	masking (verb)
put a mask on or cover with a mask
shield from light
cover with a sauce
hide under a false appearance
make unrecognizable