appall vs dismay

appall is not a noun while dismay is a noun.

Word	Noun	Adjective	Verb	Adverb
appall	No	No	Yes	No
dismay	Yes	No	Yes	No

As verbs, appall and dismay are synonyms defined as:

appall and dismay: fill with apprehension or alarm; cause to be unpleasantly surprised

Other synonyms of appall include alarm, appal, horrify.

appall (noun)	dismay (noun)
	fear resulting from the awareness of danger
	the feeling of despair in the face of obstacles

appall (verb)	dismay (verb)
strike with disgust or revulsion	fill with apprehension or alarm; cause to be unpleasantly surprised
fill with apprehension or alarm; cause to be unpleasantly surprised	lower someone's spirits; make downhearted