consensus vs cosign

consensus

verb
  • To seek consensus; to hold discussions with the aim of reaching mutual agreement. 

noun
  • A process of decision-making that seeks widespread agreement among group members. 

  • Average projected value. 

  • General agreement among the members of a given group or community, each of which exercises some discretion in decision-making and follow-up action. 

  • An agreement on some data value that is needed during computation. 

cosign

verb
  • To agree with or endorse 

  • To sign a document jointly with another person, sometimes as an endorsement. 

noun
  • The promotion of one musical artist (usually less successful) by another. 

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