disconnected vs unsharp

disconnected

adj
  • Incoherent; disjointed. 

  • That can be partitioned into two nonempty subsets which are both open and closed. 

  • Feeling a lack of empathy or association with something. 

  • That is no longer connected. 

unsharp

adj
  • dulled or intentionally blunt. 

  • out of focus; blurry. 

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 disconnected and unsharp occurred in a corpus of books? (source: Google Ngram Viewer )