illuminate vs make a dent

illuminate

verb
  • To clarify or make something understandable. 

  • To be exposed to light. 

  • To shine light on something. 

  • To glow; to light up. 

  • To decorate the page of a manuscript book with ornamental designs. 

  • To decorate something with lights. 

  • To make spectacular. 

  • To direct a radar beam toward. 

noun
  • Someone thought to have an unusual degree of enlightenment. 

make a dent

verb
  • To make an impression; to have an effect on; to chip away at. 

  • Used other than figuratively or idiomatically: see make, a, dent. 

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