die-in vs lie-in

die-in

noun
  • A form of protest where a group of people in a public area lie on the ground to simulate being dead. 

lie-in

noun
  • A form of protest where a group of people lie down in a public area. 

  • A period spent lying in bed for longer than usual after one has woken up. 

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