batting vs duvet

batting

noun
  • Cotton, wool, silk or synthetic material used to stuff the inside of a mattress, quilt etc. 

  • Special cotton for surgery. 

  • The action of using a bat. 

  • The act of someone who bats. 

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 batting and duvet occurred in a corpus of books? (source: Google Ngram Viewer )