abjure vs retract

abjure

verb
  • To reject with solemnity; to abandon forever; to repudiate; to disclaim. 

  • To abstain from; to avoid; to shun. 

  • To renounce upon oath; to forswear; to disavow. 

retract

verb
  • To take back or withdraw (something that has been said or written); to disavow, to repudiate. 

  • To avert (one's eyes or a gaze). 

  • To decline or fail to do something promised; to break one's word. 

  • To pull (something) back or back inside. 

  • Of something said or written (such as published academic work): to take back or withdraw. 

  • To draw (an extended body part) back into the body. 

  • Originally in chess and now in other games as well: to take back or undo (a move); specifically (card games) to take back or withdraw (a card which has been played). 

  • To break or fail to keep (a promise, etc.); to renege. 

  • To draw back; to draw up; to withdraw. 

  • To pronounce (a sound, especially a vowel) farther to the back of the vocal tract. 

  • To cancel or take back (something, such as an edict or a favour or grant previously bestowed); to rescind, to revoke. 

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