covers vs linen

covers

noun
  • The bedclothes; collectively, the sheets, blankets, etc. 

  • The tarpaulins or other devices used to cover the wicket during rain, in order to prevent it getting wet. 

  • The area of the field near cover and extra cover. 

linen

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

  • Thread or cloth made from flax fiber. 

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

adj
  • Having the colour linen, light beige. 

  • Made from linen cloth or thread. 

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