discontinuance vs sit-down

discontinuance

noun
  • The occurrence of something being discontinued; a cessation; an incomplete ending. 

sit-down

noun
  • An act of sitting down, especially with other people in some form of social exchange. 

  • A sit-in, a protest of civil disobedience by people sitting and refusing to move. 

adj
  • Intended to be done, used, consumed etc. while sitting. 

How often have the words discontinuance and sit-down occurred in a corpus of books? (source: Google Ngram Viewer )