cooperation vs disaccord

cooperation

noun
  • The act of cooperating. 

  • Association for mutual benefit, such as for purposes of production or purchase. 

  • Active help from a person, organization, etc., such as an orderly sharing of space or resources. 

disaccord

verb
  • To fail to be in accord; to dissent. 

noun
  • The absence or reverse of accord. 

  • Disharmony. 

How often have the words cooperation and disaccord occurred in a corpus of books? (source: Google Ngram Viewer )