blear vs blur

blear

verb
  • To make blurred or dim. 

  • To be blear; to have blear eyes; to look or gaze with blear eyes. 

  • To blur, make blurry. 

adj
  • Dim, unclear from water or rheum. 

  • Causing or caused by dimness of sight. 

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. 

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