masking vs mask

masking and mask both are nouns.

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

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

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