bedclothes vs covers

bedclothes

noun
  • Sheets, blankets, quilts or other coverings used on a bed. 

  • Clothing worn to bed. 

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. 

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