mend vs open up

mend

verb
  • To help, to advance, to further; to add to. 

  • To grow better; to advance to a better state; to become improved. 

  • To repair (something that is torn, broken, defaced, decayed, or otherwise damaged) 

  • To put in a better state; to set right; to reform; 

  • To quicken 

noun
  • A place, as in clothing, which has been repaired by mending. 

  • The act of repairing or recovering. 

open up

verb
  • To widen. 

  • Synonym of cheat out (“to face or turn toward the audience more than would be natural”) 

  • To begin running, driving, travelling, etc., at maximum speed. 

  • To commence firing weapons. 

  • To rain. 

  • To open. 

  • To reveal oneself; to share personal information about oneself; to become communicative. 

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