combat vs submission

combat

noun
  • A battle, a fight (often one in which weapons are used). 

  • a struggle for victory 

verb
  • To fight; to struggle against. 

  • To fight (with); to struggle for victory (against). 

submission

noun
  • A submission hold in wrestling, mixed martial arts, or other combat sports. 

  • The act of submitting or giving e.g. a completed piece of work. 

  • The act of submitting or yielding; surrender. 

  • The thing which has been submitted. 

  • A subset or component of a mission. 

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