proposal vs text file

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 

text file

noun
  • A data file containing only plain, human-readable text, distinct from documents with embedded formatting 

  • A data file in a character encoding that allows it to be read in non-specialised text editor. 

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