apparition vs blur

apparition

noun
  • An unexpected, wonderful, or preternatural appearance; especially something such as a ghost or phantom. 

  • The first appearance of a star or other luminary after having been invisible or obscured; opposed to occultation. 

  • A period of consecutive days or nights when a particular celestial body may be observed, beginning with the heliacal rising of the body and ending with its heliacal setting. 

  • An act of becoming visible; appearance; visibility. 

  • The thing appearing; a visible object; a form. 

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. 

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