cooperation vs furtherance

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. 

furtherance

noun
  • The act of furthering or helping forward 

  • Promotion. 

  • Advancement or progress. 

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