embark vs set forward

embark

verb
  • To start, begin. 

  • To cause to go on board a vessel or boat; to put on shipboard. 

  • To get on a boat or ship or (outside the USA) an aeroplane. 

  • To engage, enlist, or invest (as persons, money, etc.) in any affair. 

set forward

verb
  • To set off, set forth; to start. 

  • To help or assist (a person, project etc.); to promote. 

  • To propose, suggest (an opinion, theory etc.). 

  • To put or carry (something) forward. 

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