debut vs promo

debut

verb
  • to formally introduce, as to the public 

  • to make one's initial formal appearance 

noun
  • The first appearance of a debutante in society. 

  • The first public presentation of a theatrical play, motion picture, opera, musical composition, dance, or other performing arts piece. 

  • A performer's first performance to the public, in sport, the arts or some other area. 

  • The coming-of-age celebration of a woman's eighteenth birthday. 

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 debut and promo occurred in a corpus of books? (source: Google Ngram Viewer )