nonacceptance vs turndown

nonacceptance

noun
  • A neglect or refusal to accept. 

turndown

noun
  • A rejection. 

  • The operational range of a device 

  • A downturn. 

  • A downward pointing extension to a vehicle muffler. 

  • The service of turning down the bedcovers and often leaving chocolates, etc., on the pillow. 

adj
  • Made to wear with the upper part turned down. 

  • Capable of being turned down, or decreased in intensity. 

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