interwind vs snarl up

interwind

verb
  • To wind around; to intertwine. 

noun
  • The equivalent of solar wind from a pulsar. 

snarl up

verb
  • To become tangled; to become entangled 

  • to become congested. 

  • to entangle 

  • To block (traffic); to cause (traffic) to be congested. 

  • To put into disarray; contort; confuse; muddle up 

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