toerag vs wrong 'un

toerag

noun
  • A worthless or despicable person. 

  • A tramp or vagrant. 

  • A rag worn around the foot in place of a sock. 

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 toerag and wrong 'un occurred in a corpus of books? (source: Google Ngram Viewer )