piff vs worry

piff

verb
  • To throw something vigorously. 

noun
  • Piffle; nonsense; rubbish. 

adj
  • good or attractive. 

intj
  • An exclamation of annoyance or contempt; pish; pshaw. 

worry

verb
  • To touch repeatedly, to fiddle with. 

  • To harass; to irritate or distress. 

  • To be troubled; to give way to mental anxiety or doubt. 

  • To seize or shake by the throat, especially of a dog or wolf. 

  • Disturb the peace of mind of; afflict with mental agitation or distress. 

noun
  • A strong feeling of anxiety. 

  • An instance or cause of such a feeling. 

  • A person who causes worry. 

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