expunge vs strike out

expunge

verb
  • To erase or strike out. 

  • To eliminate completely; to annihilate. 

  • To delete permanently (e-mail etc.) that was previously marked for deletion but still stored. 

strike out

verb
  • to treat something as settled 

  • To draw a line through some text such as a printed or written sentence, with the purpose of deleting that text from the rest of the document. 

  • To fail; to be refused a request or to have a proposal not be accepted, in particular a request for a (hopefully romantic) date. 

  • To begin to make one's way. 

  • To lash out; to strike or hit at someone or something, particularly something in arm's length of the striker and at or near the level of the striker's head. 

  • To strongly criticize or make a verbal attack, particularly as a response to previous criticism or provocation. 

  • Of a batter, to be retired after three strikes (missed swings, as opposed to any other way of becoming "out"); of a pitcher, to cause this to happen to the batter. 

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