disagreement vs dissonance

disagreement and dissonance both are nouns.

Word	Noun	Adjective	Verb	Adverb
disagreement	Yes	No	No	No
dissonance	Yes	No	No	No

As nouns, disagreement and dissonance are synonyms defined as:

disagreement and dissonance: a conflict of people's opinions or actions or characters

Other synonyms of disagreement include dissension.

disagreement (noun)	dissonance (noun)
a difference between conflicting facts or claims or opinions	disagreeable sounds
the speech act of disagreeing or arguing or disputing	the auditory experience of sound that lacks musical quality; sound that is a disagreeable auditory experience
a conflict of people's opinions or actions or characters	a conflict of people's opinions or actions or characters