unhappy vs distressed

unhappy and distressed both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unhappy	No	Yes	No	No
distressed	No	Yes	No	No

As adjectives, unhappy and distressed are synonyms defined as:

Other synonyms of unhappy include dysphoric.

unhappy (adjective)	distressed (adjective)
experiencing or marked by or causing sadness or sorrow or discontent	generalized feeling of distress
generalized feeling of distress	facing or experiencing financial trouble or difficulty
marked by or producing unhappiness	afflicted with or marked by anxious uneasiness or trouble or grief
causing discomfort	suffering severe physical strain or distress