cloud vs unfold

cloud

verb
  • To make obscure. 

  • To make less acute or perceptive. 

  • To make gloomy or sullen. 

  • To become marked, darkened or variegated in this way. 

  • To become foggy or gloomy, or obscured from sight. 

  • To overspread or hide with a cloud or clouds. 

  • To mark with, or darken in, veins or sports; to variegate with colors. 

  • To blacken; to sully; to stain; to tarnish (reputation or character). 

  • Of the breath, to become cloud; to turn into mist. 

noun
  • Crystal methamphetamine. 

  • A negative or foreboding aspect of something positive: see every cloud has a silver lining or every silver lining has a cloud. 

  • The Internet, regarded as an abstract amorphous omnipresent space for processing and storage, the focus of cloud computing. 

  • A large, loosely-knitted headscarf worn by women. 

  • A telecom network (from their representation in engineering drawings) 

  • Anything which makes things foggy or gloomy. 

  • A visible mass of water droplets suspended in the air. 

  • Anything unsubstantial. 

  • A dark spot on a lighter material or background. 

  • A group or swarm, especially suspended above the ground or flying. 

  • Any mass of dust, steam or smoke resembling such a mass. 

  • An elliptical shape or symbol whose outline is a series of semicircles, supposed to resemble a cloud. 

unfold

verb
  • To reveal. 

  • To undo a folding. 

  • To release from a fold or pen. 

  • To turn out; to happen; to develop. 

  • To open (anything covered or closed); to lay open to view or contemplation; to bring out in all the details, or by successive development. 

noun
  • In functional programming, a kind of higher-order function that is the opposite of a fold. 

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