blur vs muddle

blur

verb
  • To smear, stain or smudge. 

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

  • To become indistinct. 

  • To transfer the input focus away from. 

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

noun
  • Something that appears hazy or indistinct 

  • A smear, smudge or blot 

adj
  • In a state of doubt or confusion. 

muddle

verb
  • To make turbid or muddy. 

  • To dabble in mud. 

  • To mash slightly for use in a cocktail. 

  • To think and act in a confused, aimless way. 

  • To cloud or stupefy; to render stupid with liquor; to intoxicate partially. 

  • To mix together, to mix up; to confuse. 

  • To waste or misuse, as one does who is stupid or intoxicated. 

noun
  • A mixture of crushed ingredients, as prepared with a muddler. 

  • A mixture; a confusion; a garble. 

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