come on vs piff

come on

intj
  • An expression of frustration, exasperation, or impatience; hurry up. 

  • An expression of defiance or as a challenge; approach; come at me. 

  • Synonym of let's go, a cheer or expression of support, encouragement, &c. 

  • Come along with me; join me in going. 

  • An expression of disbelief. 

verb
  • Elaboration of come (in the sense of move towards the speaker or other focus), emphasising motion or progress, or conveying a nuance of familiarity or encouragement. 

  • To encounter, discover; to come upon. 

  • To be broadcast (through a device), or (of a broadcast) to begin playing. 

  • To appear on a stage or in a performance. 

  • To activate; to turn on. 

  • To enter the playing field. 

  • To show sexual or relational interest through words or sometimes actions. 

  • To progress, to develop. 

  • To get one's period, start menstruating. 

piff

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

adj
  • good or attractive. 

verb
  • To throw something vigorously. 

noun
  • Piffle; nonsense; rubbish. 

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