recover vs stumble upon

recover

verb
  • to salvage, to extricate, to rescue (a thing or person) 

  • To obtain a positive judgement; to win in a lawsuit. 

  • To regain one's composure, balance etc. 

  • To get better, to regain health or prosperity. 

  • To replenish to, resume (a good state of mind or body). 

  • To cover again. 

  • To add a new roof membrane or steep-slope covering over an existing one. 

  • To gain as compensation or reparation, usually by formal legal process 

  • To get back, to regain (a physical thing; in astronomy and navigation, sight of a thing or a signal). 

noun
  • A position of holding a firearm during exercises, whereby the lock is at shoulder height and the sling facing out. 

stumble upon

verb
  • To discover or find something by accident. 

  • To meet somebody by chance. 

How often have the words recover and stumble upon occurred in a corpus of books? (source: Google Ngram Viewer )