illustrate vs reproduce

illustrate

verb
  • To provide a book or other publication with pictures, diagrams or other explanatory or decorative features. 

  • To clarify something by giving, or serving as, an example or a comparison. 

reproduce

verb
  • To produce an image or copy of. 

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

  • To bring something to mind; to recall. 

  • To produce again; to recreate. 

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