blur vs half-light

blur

noun
  • Something that appears hazy or indistinct 

  • A smear, smudge or blot 

adj
  • In a state of doubt or confusion. 

verb
  • 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. 

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

half-light

noun
  • The soft, greyish light characteristic of dawn or dusk 

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