blur vs illuminate

blur

verb
  • To make indistinct or hazy, to obscure or dim. 

  • To cause imperfection of vision in; to dim; to darken. 

  • To become indistinct. 

  • To transfer the input focus away from. 

  • To smear, stain or smudge. 

noun
  • Something that appears hazy or indistinct 

  • A smear, smudge or blot 

adj
  • In a state of doubt or confusion. 

illuminate

verb
  • To glow; to light up. 

  • To be exposed to light. 

  • To shine light on something. 

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

  • To decorate something with lights. 

  • To clarify or make something understandable. 

  • To make spectacular. 

  • To direct a radar beam toward. 

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

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