phone-in vs prog

phone-in

noun
  • A show requiring members of the public to telephone the studio. 

prog

noun
  • A program. 

  • Progressive rock. 

  • A progressive. 

  • A pointed instrument. 

  • Progesterone. 

verb
  • To programme. 

  • To prognosticate; to forecast. 

  • To prick; to goad; to progue. 

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