crochet vs edging

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. 

edging

noun
  • The operation of shaping or dressing the edge of anything, as of a piece of metal. 

  • A technique involving the placement of the edge of the climbing shoe on a sharp hold. 

  • Anything that forms, defines, or marks the edge of something. 

  • The sexual technique of maintaining a high level of sexual arousal for an extended period of time without reaching orgasm. 

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