hopsack vs linen

hopsack

noun
  • A coarse, loosely-woven clothing fabric. 

  • A hemp sack used for holding hops. 

linen

noun
  • A light beige colour, like that of linen cloth undyed. 

  • Thread or cloth made from flax fiber. 

  • Domestic textiles, such as tablecloths, bedding, towels, underclothes, etc., that are made of linen or linen-like fabrics of cotton or other fibers; linens. 

adj
  • Having the colour linen, light beige. 

  • Made from linen cloth or thread. 

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