assuage vs pester

assuage

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

  • To pacify or soothe (someone). 

pester

noun
  • A bother or nuisance. 

verb
  • To bother, harass, or annoy persistently. 

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