four-flush vs imitate

four-flush

verb
  • To attempt to pass off a four-flush as a flush. 

  • To bluff. 

noun
  • Four cards of the same suit. 

imitate

verb
  • To follow as a model or a pattern; to make a copy, counterpart or semblance of. 

How often have the words four-flush and imitate occurred in a corpus of books? (source: Google Ngram Viewer )