blur vs macule

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. 

macule

verb
  • To blur or be blurred; especially to blur or double an impression from type. 

noun
  • A spot. 

  • A blur or an appearance of a double impression, as when the paper slips a little during printing. 

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