damp vs unsharp

damp

adj
  • Despondent; dispirited, downcast. 

  • In a state between dry and wet; moderately wet; moist. 

noun
  • A gaseous product, formed in coal mines, old wells, pits, etc. 

  • Moisture; humidity; dampness. 

verb
  • To suppress vibrations (mechanical) or oscillations (electrical) by converting energy to heat (or some other form of energy). 

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