exonerate vs recriminate

exonerate

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

  • To free (someone) from accusation or blame. 

recriminate

verb
  • To accuse in return, state an accusation in return, make a countercharge. 

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