fall off vs reproduce

fall off

verb
  • To fall into sin; stray. 

  • To diminish in size, value, etc. 

  • To change the direction of the sail so as to point in a direction that is more down wind; to bring the bow leeward. 

  • To become detached or to drop from. 

reproduce

verb
  • To bring something to mind; to recall. 

  • To generate or propagate offspring or organisms sexually or asexually. 

  • To produce again; to recreate. 

  • To produce an image or copy of. 

How often have the words fall off and reproduce occurred in a corpus of books? (source: Google Ngram Viewer )