discord

Etymology 1

Circa 1230, Middle English descorde, discorde; from Anglo-Norman, Old French descort (derivative of descorder), descorde (“disagreement”); from Latin discordia, from discors (“disagreeing, disagreement”), from dis- (“apart”) + cor, cordis (“heart”). Verb derives from Middle English discorden, from Anglo-Norman, Old French descorder, from Latin discordāre, from discord-, as above.

noun

1. Lack of concord, agreement or harmony.
2. Tension or strife resulting from a lack of agreement; dissension.
3. (music) An inharmonious combination of simultaneously sounded tones; a dissonance.
4. Any harsh noise, or confused mingling of sounds.

verb

1. (intransitive, archaic) To disagree; to fail to agree or harmonize; clash.

Etymology 2

From dis- + cord (“tie, bind”)

verb

1. (transitive, rare) To untie things which are connected by a cord.