conviction vs exculpation

conviction

noun
  • A judgement of guilt in a court of law. 

  • The state of being wholly convinced. 

  • A firmly held belief. 

  • The state of being found or proved guilty. 

exculpation

noun
  • The act of exculpating from alleged fault or crime. 

  • That which exculpates; an excuse. 

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