pilferer vs sandbagger

pilferer

noun
  • One who pilfers. 

sandbagger

noun
  • One who sandbags (misleads about his/her ability level in order to win bets); a hustler. 

  • A robber who uses a sandbag to stun victims. 

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