push off vs sneak off

push off

verb
  • To go away; to get lost. 

  • To delay, postpone, put off, push back. 

  • to commit a foul by pushing against an opponent to both accelerate more quickly and push the opponent in the opposite direction. 

sneak off

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