discord in WordNet English dictionary

1. be different from one another
   disagree  disaccord  discord 
   

1. strife resulting from a lack of agreement
   discord  discordance 
   
2. a harsh mixture of sounds
   discordance  discord 
   
3. disagreement among those expected to cooperate
   discord  dissension 
   
4. lack of agreement or harmony
   discord  strife