bedclothes vs duvet

bedclothes

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

  • Clothing worn to bed. 

duvet

noun
  • A quilt or usually flat cloth bag with a filling (traditionally down) and usually an additional washable cover, used instead of blankets; often called a comforter or quilt, especially in US English. 

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