A Bedspread is a term given to a pre filled bedcover which is used to dress the bed / cot. Comforters & Coverlets fall into this category and they can all vary in weight, size and thickness. Coverlets & Bedspreads may be used for decoration, layering and warmth and are generally used with sheets and blankets.
A Quilt Cover, sometimes also referred to as a Doona Cover, is supplied unfilled with an opening.
There are many inserts available in the market place to be used in conjunction with a quilt cover, typically these are Feather & Down, Wool, Cotton or Polyester.