crochet vs tatting

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. 

tatting

noun
  • A form of looped and knotted lace needlework made from a single thread. 

  • The art of making such lace. 

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