dismay vs deject

dismay is a noun but deject is not a noun.

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

As verbs, dismay and deject are synonyms defined as:

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

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

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