dring vs promo

dring

verb
  • To press; squeeze; crowd; push. 

noun
  • A throng; crowd. 

  • A narrow passage. 

promo

verb
  • To promote; to publicize. 

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

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