felon vs wrong 'un

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 

wrong 'un

noun
  • A dishonest or disreputable person; a crook or rogue. 

  • A horse deliberately held back in order to lose a race. 

  • A googly. 

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