donkey vs piff

donkey

noun
  • A fool. 

  • A bad poker player. 

  • A small auxiliary engine. 

  • A domestic animal, Equus asinus asinus, similar to a horse. 

  • A stubborn person. 

piff

noun
  • Piffle; nonsense; rubbish. 

verb
  • To throw something vigorously. 

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

adj
  • good or attractive. 

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