assuage vs slake

assuage

verb
  • To pacify or soothe (someone). 

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

slake

verb
  • To besmear. 

  • To cool (something) with water or another liquid. 

  • To satisfy (thirst, or other desires). 

  • To become mixed with water, so that a true chemical combination takes place. 

  • To mix with water, so that a true chemical combination takes place. 

noun
  • A sloppy mess. 

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