humph vs piff

humph

intj
  • A sound, usually made with a closed mouth pouting, indicating annoyance, indignation, disapproval, doubt, or sighing. 

verb
  • To utter "humph!" in doubt or disapproval. 

piff

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

verb
  • To throw something vigorously. 

adj
  • good or attractive. 

noun
  • Piffle; nonsense; rubbish. 

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