exonerate vs reproach

exonerate

verb
  • To free (someone) from accusation or blame. 

  • To free (someone) from an obligation, responsibility or task. 

reproach

verb
  • To criticize or rebuke (someone). 

  • To disgrace, or bring shame upon. 

noun
  • A mild rebuke, or an implied criticism. 

  • Disgrace or shame. 

  • An object of scorn. 

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