obstruction vs sit-down

obstruction

noun
  • The act of obstructing, or state of being obstructed. 

  • Something which obstructs or impedes, either intentionally or unintentionally 

  • The condition of having the natural powers obstructed in their usual course; the arrest of the vital functions; death. 

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 obstruction and sit-down occurred in a corpus of books? (source: Google Ngram Viewer )