combat vs submit

combat

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

  • To fight; to struggle against. 

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

  • a struggle for victory 

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 combat and submit occurred in a corpus of books? (source: Google Ngram Viewer )