shellac vs thrash

shellac

noun
  • A beating; a thrashing. 

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

verb
  • To coat with shellac. 

  • To inflict a heavy defeat upon. 

  • To beat; to thrash. 

thrash

noun
  • A beat or blow; the sound of beating. 

  • thrash metal 

verb
  • To defeat utterly. 

  • To extensively test a software system, giving a program various inputs and observing the behavior and outputs that result. 

  • In computer architecture, to cause or undergo poor performance of a virtual memory (or paging) system. 

  • To move about wildly or violently; to flail; to labour. 

  • To beat mercilessly. 

  • To thresh. 

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