endure vs whistle past the graveyard

endure

verb
  • To remain firm, as under trial or suffering; to suffer patiently or without yielding; to bear up under adversity; to hold out. 

  • To tolerate or put up with something unpleasant. 

  • To last. 

  • To continue or carry on, despite obstacles or hardships; to persist. 

  • To suffer patiently. 

whistle past the graveyard

verb
  • To attempt to stay cheerful in a dire situation; to proceed with a task, ignoring an upcoming hazard, hoping for a good outcome. 

  • To enter a situation with little or no understanding of the possible consequences. 

How often have the words endure and whistle past the graveyard occurred in a corpus of books? (source: Google Ngram Viewer )