molest vs pester

molest

verb
  • To annoy intentionally. 

  • To disturb or tamper with. 

  • To sexually assault or sexually harass. 

pester

verb
  • To bother, harass, or annoy persistently. 

noun
  • A bother or nuisance. 

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