make off vs run away

make off

verb
  • To exit or depart; to run away. 

  • To tie off, fix down or terminate the end of a rope, cable or thread. 

run away

verb
  • To flee by running. 

  • To leave home, or other place of residence, usually unannounced, or to make good on a threat, with such action usually performed by a child or juvenile. 

  • To become a runaway. 

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