discomfited vs frustrated

discomfited is a noun but frustrated is not a noun.

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

As adjectives, discomfited and frustrated are synonyms defined as:

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

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

discomfited (adjective)	frustrated (adjective)
disappointingly unsuccessful	disappointingly unsuccessful