hold on vs linger

hold on

verb
  • To persist. 

  • To remain loyal. 

  • To grasp or grip firmly. 

  • To keep; to store something for someone. 

  • Wait a short while. 

linger

verb
  • To stay or remain in a place or situation, especially as if unwilling to depart or not easily able to do so. 

  • To remain alive or existent although still proceeding toward death or extinction; to die gradually. 

  • To consider or contemplate for a period of time; to engage in analytic thinking or discussion. 

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