pester vs pleasantry

pester

noun

  • A bother or nuisance. 

verb

  • To bother, harass, or annoy persistently. 

pleasantry

noun

  • A playful remark; a jest. 

  • A casual, courteous remark. 

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