move ahead vs stick to

move ahead

verb
  • to continue without being distracted; to keep going 

  • to proceed; to make or signify progress 

  • to go on to something else 

stick to

verb
  • To persist; to continue (to use, do, etc.) 

  • Used other than figuratively or idiomatically: see stick, to. 

How often have the words move ahead and stick to occurred in a corpus of books? (source: Google Ngram Viewer )