What is the meaning of Discord?

Lack of concord, agreement, harmony; disaccord.

Tension or strife resulting from a lack of agreement; dissension.

Any harsh noise, or confused mingling of sounds.

An inharmonious combination of simultaneously sounded tones; a dissonance.

To disagree; to fail to agree or harmonize; clash.

To untie things which are connected by a cord.

discordant

disagreement

Source: wiktionary.org