promo vs put across

promo

verb
  • To promote; to publicize. 

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

put across

verb
  • to convey or communicate. 

  • to explain or state something clearly and understandably. 

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