twine vs unravel

twine

verb
  • To mutually twist together; to become mutually involved; to intertwine. 

  • To wind; to bend; to make turns; to meander. 

  • To ascend in spiral lines about a support; to climb spirally. 

  • To weave together. 

  • To wind, as one thread around another, or as any flexible substance around another body. 

  • To wind about; to embrace; to entwine. 

noun
  • A strong thread composed of two or three smaller threads or strands twisted together, and used for various purposes, as for binding small parcels, making nets, and the like; a small cord or string. 

  • Intimate and suggestive dance gyrations. 

  • The act of twining or winding round. 

  • A twist; a convolution. 

unravel

verb
  • To separate the connected or united parts of; to throw into disorder; to confuse. 

  • To separate the threads (of); disentangle. 

  • To become separated; (of something woven, knitted, etc.) to come apart. 

  • To clear from complication or difficulty; to unfold; to solve. 

  • To become undone; to collapse. 

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