afghan vs bedspread

afghan

noun
  • A blanket or throw, usually crocheted or knitted. 

  • A type of iced chocolate biscuit, sometimes containing cornflakes and topped with a walnut. 

bedspread

noun
  • The topmost covering of a bed, often functioning as a blanket. 

  • A coverlet. 

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