dissonant vs disharmonious

dissonant and disharmonious both are adjectives.

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

As adjectives, dissonant and disharmonious are synonyms defined as:

Other synonyms of dissonant include discordant, inharmonic.

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