abscond vs fly the coop

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. 

fly the coop

verb
  • To depart hastily or unannounced; to escape or flee. 

  • To escape from a pen or similar enclosure. 

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