felon vs guilty party

felon

noun
  • A wicked person. 

  • A bacterial infection at the end of a finger or toe. 

  • A person who has committed a felony. 

  • A person who has been tried and convicted of a felony. 

adj
  • wicked; cruel 

guilty party

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