discord

Short definition from Wiktionary

Noun

1. 1
   Lack of concord, agreement, harmony; disaccord.
2. 2
   Tension or strife resulting from a lack of agreement; dissension.
3. 3
   Any harsh noise, or confused mingling of sounds.
4. 4
   An inharmonious combination of simultaneously sounded tones; a dissonance.
5. 5
   A Discord server.
6. 6
   A Discord account.

Verb

1. 1
   To disagree; to fail to agree or harmonize; clash.
2. 2
   To untie things which are connected by a cord.

Proper noun

1. 1
   An instant messaging and VoIP social platform which allows communication through voice calls, video calls, text messaging, and media.