dare vs vouch

dare

verb
  • To defy or challenge (someone to do something) 

  • To terrify; to daunt. 

  • To have enough courage (to do something). 

  • To have enough courage to meet or do something, go somewhere, etc.; to face up to 

  • To catch (larks) by producing terror through the use of mirrors, scarlet cloth, a hawk, etc., so that they lie still till a net is thrown over them. 

noun
  • The quality of daring; venturesomeness; boldness. 

  • A challenge to prove courage. 

  • In the game truth or dare, the choice to perform a dare set by the other players. 

  • A small fish, the dace 

  • Defiance; challenge. 

vouch

verb
  • To assert, aver, or declare (something). 

  • To provide evidence or proof. 

  • To back, confirm, or support (someone or something) with credible evidence or proof. 

  • To call on (someone) to be a witness to something. 

  • To affirm or warrant the correctness or truth of (something); also, to affirm or warrant (the truth of an assertion or statement). 

  • To bear witness or testify; to guarantee or sponsor. 

  • To cite or rely on (an authority, a written work, etc.) in support of one's actions or opinions. 

  • To bear witness or testify to the nature or qualities (of someone or something). 

  • In full vouch to warrant or vouch to warranty: to summon (someone) into court to establish a warranty of title to land. 

  • Followed by over: of a vouchee (a person summoned to court to establish a warranty of title): to summon (someone) to court in their place. 

  • To express confidence in or take responsibility for (the correctness or truth of) something. 

noun
  • An assertion, a declaration; also, a formal attestation or warrant of the correctness or truth of something. 

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