discomfited vs disappointed

discomfited is a noun but disappointed is not a noun.

Word	Noun	Adjective	Verb	Adverb
discomfited	Yes	Yes	No	No
disappointed	No	Yes	No	No

As adjectives, discomfited and disappointed are synonyms defined as:

Other synonyms of discomfited include defeated, foiled, frustrated, thwarted.

discomfited (noun)	disappointed (noun)
people who are defeated

discomfited (adjective)	disappointed (adjective)
disappointingly unsuccessful	disappointingly unsuccessful