dissonant vs discordant

dissonant and discordant both are adjectives.

Word	Noun	Adjective	Verb	Adverb
dissonant	No	Yes	No	No
discordant	No	Yes	No	No

As adjectives, dissonant and discordant are synonyms defined as:

Other synonyms of dissonant include disharmonious, inharmonic.

dissonant (adjective)	discordant (adjective)
not in accord	not in agreement or harmony
lacking in harmony	lacking in harmony
characterized by musical dissonance; harmonically unresolved