mitigate vs solace

mitigate

verb
  • To downplay. 

  • To reduce, lessen, or decrease; to make less severe or easier to bear. 

solace

verb
  • To allay or assuage. 

  • To give solace to; comfort; cheer; console. 

  • To take comfort; to be cheered. 

noun
  • Comfort or consolation in a time of loneliness or distress. 

  • A source of comfort or consolation. 

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