endure vs hold on

endure

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

  • To tolerate or put up with something unpleasant. 

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

  • To last. 

  • To suffer patiently. 

hold on

verb
  • To persist. 

  • To remain loyal. 

  • To grasp or grip firmly. 

  • To keep; to store something for someone. 

  • Wait a short while. 

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