lac vs lacing

lac

noun
  • Laceration. 

  • A resinous substance or lacquer produced mainly on the banyan tree by the female of Kerria lacca, a scale insect. 

lacing

noun
  • The tied or threaded laces that form a netlike pattern. 

  • Lagging, or cross-pieces placed to prevent ore from falling into a passage. 

  • The cords by which the boards of a book are fastened to the back. 

  • The knee of the head, or lace-piece, a piece of compass or knee timber secured to the back of the figurehead. 

  • A beating as punishment; a hiding. 

  • That with which something is laced. 

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