play dead vs submit

play dead

verb
  • To act as though defeated while awaiting a chance to attack. 

  • To lie very still, like a corpse. 

submit

verb
  • To win a fight against (an opponent) by submission. 

  • To yield (something) to another, as when defeated. 

  • To enter or put forward for approval, consideration, marking etc. 

  • To yield or give way to another. 

  • To subject; to put through a process. 

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