discomfited vs foiled

discomfited is a noun but foiled is not a noun.

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

As adjectives, discomfited and foiled are synonyms defined as:

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

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

discomfited (adjective)	foiled (adjective)
disappointingly unsuccessful	disappointingly unsuccessful