closing vs debut

closing

noun
  • In morphology, the erosion of the dilation of a set. 

  • The final procedure in a house sale, when documents are signed and recorded. 

  • The act by which something is closed. 

  • The end or conclusion of something. 

adj
  • Pertaining to the finish or ending of a series of events; occurring at the end or after all others. 

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. 

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