abscond vs run off

abscond

verb
  • To flee, often secretly; to steal away. 

  • To evade, to hide or flee from. 

  • To abandon a hive. 

  • To hide, conceal, or absent oneself clandestinely, with the intent to avoid legal process 

  • To hide, to be in hiding or concealment. 

run off

verb
  • To chase someone away. 

  • To operate by a particular energy or fuel source. 

  • To flee or depart quickly. 

  • to have diarrhea 

  • To make photocopies, or print. 

  • To write something quickly. 

  • To pour or spill off or over. 

  • To cause to flow away. 

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