assuage vs put behind one

assuage

verb
  • To pacify or soothe (someone). 

  • To lessen the intensity of, to mitigate or relieve (hunger, emotion, pain etc.). 

put behind one

verb
  • To try to forget (a past negative experience). 

How often have the words assuage and put behind one occurred in a corpus of books? (source: Google Ngram Viewer )