proposal vs submission

proposal

noun
  • The document on which such a thing is written. 

  • The terms or conditions proposed 

  • A scheme or design 

  • The offer by a party of what he has in view as to an intended business transaction, which, with acceptance, constitutes a contract. 

  • The act of asking someone to be one's spouse; an offer of marriage 

submission

noun
  • The thing which has been submitted. 

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

  • The act of submitting or yielding; surrender. 

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

  • A subset or component of a mission. 

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