dissimulate vs mask

dissimulate is not a noun while mask is a noun.

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

As verbs, mask is a hypernym of dissimulate; that is, mask is a word with a broader meaning than dissimulate:

Other hypernyms of dissimulate include disguise.

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

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