enact vs expunge

enact

verb
  • to do; to effect 

  • to act the part of; to play 

  • to make (a bill) into law 

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. 

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