crochet vs intervolve

crochet

verb
  • To make (a piece of) needlework using a hooked needle; to make interlocking loops of thread. 

noun
  • A certain crest of enamel on the molar teeth of some rhinoceroses. 

  • Needlework made by looping thread with a hooked needle. 

intervolve

verb
  • To twist or coil together. 

  • To involve one with another. 

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