cooperation vs participation

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. 

participation

noun
  • The act of participating, of taking part in something. 

  • The state of being related to a larger whole. 

  • The process during which individuals, groups and organizations are consulted about or have the opportunity to become actively involved in a project or program of activity. 

  • An ownership interest or profit-sharing right. 

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