lac vs shellac

lac

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

  • Laceration. 

shellac

noun
  • A processed secretion of the lac insect, Coccus lacca; used in polishes, varnishes etc. 

  • A beating; a thrashing. 

verb
  • To coat with shellac. 

  • To inflict a heavy defeat upon. 

  • To beat; to thrash. 

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