According to Google: Dissonance (From Search)

dis·so·nance

ˈdisənəns/

noun

MUSIC

noun: dissonance; plural noun: dissonances

1. lack of harmony among musical notes.

   "an unusual degree of dissonance for such choral styles"

   • a tension or clash resulting from the combination of two disharmonious or unsuitable elements.

     "dissonance between campaign rhetoric and personal behavior"

Origin

late Middle English: from Old French, from late Latin dissonantia, from Latin dissonant-‘not agreeing in sound,’ from the verb dissonare .