blur vs slush

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. 

adj
  • In a state of doubt or confusion. 

noun
  • Something that appears hazy or indistinct 

  • A smear, smudge or blot 

slush

verb
  • To smear with slushy liquid or grease. 

  • To paint with a mixture of white lead and lime. 

  • To slosh or splash; to move as, or through, a slushy or liquid substance. 

noun
  • Liquid mud or mire. 

  • A soft mixture of grease and other materials, used for lubrication. 

  • Flavored shaved ice served as a drink. 

  • Half-melted snow or ice, generally located on the ground. 

  • A mixture of white lead and lime, used as a paint to prevent oxidation. 

  • Unsolicited manuscripts, as in slush pile. 

  • The refuse grease and fat collected in cooking, especially on shipboard. 

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