blackleg vs thimblerigger

blackleg

noun
  • A person who cheats in a game; a cheater, especially a dishonest bookmaker. 

  • A fatal cattle disease caused by the soil-borne bacterium Clostridium chauvoei; symptomatic anthrax. 

  • A person who takes the place of striking workers; a scab. 

verb
  • To continue working whilst fellow workers strike. 

thimblerigger

noun
  • One who cheats by thimblerigging, or tricks of legerdemain. 

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