certitude vs mistrust

certitude

noun
  • Something that is a certainty. 

  • Sureness, certainty. 

mistrust

verb
  • To be suspicious. 

  • To have no confidence in (something or someone). 

  • To be wary, suspicious or doubtful of (something or someone). 

  • To suspect, to imagine or suppose (something) to be the case. 

noun
  • Lack of trust or confidence; distrust, untrust. 

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