dissonance

noun

1. (countable, uncountable)A harsh, discordant combination of sounds.
2. (countable, uncountable)Conflicting notes that are not overtones of the note or chord sounding.
3. (uncountable)A state of disagreement or conflict.

   “Cognitive dissonance exists when a person possesses two cognitions, one of which is contradictory to the other”

4. (countable)An instance of that state.

   “In this polyphony of images in the unconscious which is beyond and outside historical time, there are complex harmonies but no dissonances: the images do not clash, but that, of course, is an aesthetic judgment and not a scientific one.”