disbelief vs mistrust

disbelief

noun
  • Unpreparedness, unwillingness, or inability to believe that something is the case. 

  • Astonishment. 

  • The loss or abandonment of a belief; cessation of belief. 

mistrust

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

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. 

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