bilker vs cheater

bilker

noun
  • A cheat, especially one who evades payment. 

cheater

noun
  • One who cheats. 

  • An improvised breaker bar made from a length of pipe and a wrench (spanner), usually used to free screws, bolts, etc. that are difficult to remove with a ratchet or wrench alone. 

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