drag on vs endure

drag on

verb
  • to last too long 

endure

verb
  • To last. 

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

  • To suffer patiently. 

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