propose marriage vs set forth

propose marriage

verb
  • To ask someone if they want to become one's spouse. 

set forth

verb
  • To present for consideration; to propose. 

  • To begin a journey or expedition. 

  • To start. 

  • To state; describe; give an account of. 

How often have the words propose marriage and set forth occurred in a corpus of books? (source: Google Ngram Viewer )