hebetate vs take the edge off

hebetate

verb
  • To render obtuse; to dull; to blunt. 

adj
  • obtuse; dull 

  • Having a dull or blunt and soft point 

take the edge off

verb
  • To diminish the effects of (something unpleasant or severe); to dull. 

  • To relax or unwind (by consuming alcohol or other psychoactive substances). 

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