make off vs slide off

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. 

slide off

verb
  • To leave a place, a meeting, etc., without being noticed; to slip away, slip off. 

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

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