unroll vs unwrap

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. 

unwrap

verb
  • To open or undo, as what is wrapped or folded. 

  • To remove word wrap from. 

  • To become unwrapped. 

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