frustrated vs defeated

frustrated is not a noun while defeated is a noun.

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

As adjectives, frustrated and defeated are synonyms defined as:

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

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

frustrated (adjective)	defeated (adjective)
disappointingly unsuccessful	beaten or overcome; not victorious
	disappointingly unsuccessful