choker vs joy killer

choker

noun
  • One who performs badly at an important part of a competition because they are nervous, especially when winning. 

  • One who operates the choke of an engine during ignition. 

  • Any disappointing or upsetting circumstance. 

  • A loop of cable fastened around a log to haul it. 

  • One who, or that which, chokes or strangles. 

  • A piece of jewelry or ornamental fabric, worn as a necklace or neckerchief, tight to the throat. 

joy killer

noun
  • killjoy (Someone or something that hinders fun.) 

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