promo vs prompting

promo

noun
  • an interview or monologue intended to promote a character or an upcoming match. 

verb
  • To promote; to publicize. 

prompting

noun
  • The action of saying something to persuade, encourage, or remind someone to do or say something. 

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