curtains vs finis

curtains

noun
  • An end or death. 

  • A ring of clear liquid, forming into drops, near the top of a glass of fortified wine; the result of differential evaporation of alcohol and subsequent changes in surface tension; an example of the Marangoni effect. 

finis

noun
  • The end (of a book or other work). 

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