foggy vs unsharp

foggy

adj
  • Obscured by mist or fog; unclear; hazy 

  • Being, covered with, or pertaining to fog (“tall grass etc that grows after, or is left after, cutting; moss”) 

  • Confused, befuddled, etc. 

unsharp

adj
  • out of focus; blurry. 

  • dulled or intentionally blunt. 

verb
  • To sharpen (an image) by creating a blurred ("unsharp") negative as a mask, and then combining that mask with the original. 

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