mask vs masker

mask and masker both are nouns.

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

mask (noun)	masker (noun)
activity that tries to conceal something	a participant in a masquerade
a covering to disguise or conceal the face
a protective covering worn over the face
a party of guests wearing costumes and masks

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