exculpate vs indict

exculpate

verb
  • To clear of or to free from guilt; exonerate. 

indict

verb
  • To make a formal accusation or indictment for a crime against (a party) by the findings of a jury, especially a grand jury. 

  • To accuse of wrongdoing; charge. 

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