frustrated vs disappointed

frustrated and disappointed both are adjectives.

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

As adjectives, frustrated and disappointed are synonyms defined as:

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

frustrated (adjective)	disappointed (adjective)
disappointingly unsuccessful	disappointingly unsuccessful