abscond vs sneak off

abscond

verb
  • To evade, to hide or flee from. 

  • To abandon a hive. 

  • To flee, often secretly; to steal away. 

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

  • To hide, to be in hiding or concealment. 

sneak off

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