seated vs sit-down

seated

adj
  • sitting 

  • fixed; confirmed 

  • located; situated 

  • of a woman's skirt, stretched out and baggy over the wearer's buttocks from much sitting while wearing the skirt 

sit-down

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

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. 

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