allay vs take the edge off

allay

verb
  • To alleviate; to abate; to mitigate. 

  • To make quiet or put at rest; to pacify or appease; to quell; to calm. 

noun
  • Alleviation; abatement; check. 

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 allay and take the edge off occurred in a corpus of books? (source: Google Ngram Viewer )