cling to life vs hold out

cling to life

hold out

verb
  • To hold (something) out; to extend (something) forward. 

  • To set aside something or save it for later. 

  • To offer, present (a hope, possibility, opportunity etc.) 

  • To wait, or refuse in hopes of getting something better (from a negotiation, etc.) 

  • To withhold something. 

  • To survive, endure. 

How often have the words cling to life and hold out occurred in a corpus of books? (source: Google Ngram Viewer )