cloak vs unroll

cloak

noun
  • A long outer garment worn over the shoulders covering the back; a cape, often with a hood. 

  • That which conceals; a disguise or pretext. 

  • A blanket-like covering, often metaphorical. 

  • A text replacement for an IRC user's hostname or IP address, making the user less identifiable. 

verb
  • To cover up, hide or conceal. 

  • To render or become invisible via futuristic technology. 

  • To cover as with a cloak. 

unroll

verb
  • To straighten something that has been rolled, twisted or curled. 

  • To emerge, be revealed or become apparent; to unfold. 

  • To replace (a loop in a program) with a repetitive sequence of the individual instructions that the loop would carry out, sometimes used as an optimization. 

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