crochet vs threadwork

crochet

noun
  • Needlework made by looping thread with a hooked needle. 

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

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

threadwork

noun
  • Work made with, or as if with, threads. 

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