interwind vs untwine

interwind

verb
  • To wind around; to intertwine. 

noun
  • The equivalent of solar wind from a pulsar. 

untwine

verb
  • To untwist the strands of (something entwined). 

  • To free (one thing that is entwined with another), disentangle, extricate. 

  • To become untwisted or disentangled. 

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