deject vs dismay

deject is not a noun while dismay is a noun.

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

As verbs, deject and dismay are synonyms defined as:

Other synonyms of deject include cast down, demoralise, demoralize, depress, dispirit, get down.

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

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