pester vs pinprick

pester

noun
  • A bother or nuisance. 

verb
  • To bother, harass, or annoy persistently. 

pinprick

noun
  • A mildly annoying wound or damage. 

  • An insignificant puncture made by a pin or similar point. 

  • A very tiny dot. 

verb
  • To produce a jabbing sensation, like a pinprick, in. 

  • To puncture with a tiny hole or holes. 

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