peel away vs rub off

peel away

verb
  • To become separate through peeling. 

  • To burn out while accelerating and rapidly depart; to peel off, peel out. 

  • To take away from something else. 

  • To separate off from the main body; to move off to one side (as in troop movements on a parade ground or in an organized retreat, or columns in a procession). 

rub off

verb
  • To clean by rubbing. 

  • To be transferred with little or no effort. 

  • Used other than figuratively or idiomatically: see rub, off. 

How often have the words peel away and rub off occurred in a corpus of books? (source: Google Ngram Viewer )