cooperation vs synergy

cooperation

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

  • The act of cooperating. 

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

synergy

noun
  • Benefits resulting from combining different groups, people, objects or processes. 

  • The cooperation of two or more nerves, muscles, organs, etc. 

  • A synonym of binding energy. 

  • The combined action of two or more drugs where the effects are stronger than their mere sum. 

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