Making the world better, one answer at a time. The word foil in drama means a character or scene that is set up as a contrast to another so that each will stand out vividly.. Hope that helped.
Typically, a comforter is a thick, quilted, fluffy blanket that is used to keep you warm. It is usually filled with synthetic fiber filler which is quilted or stitched to secure the filling and keep it evenly distributed. Unlike a duvet, the comforter only forms one piece of all of your bed linens.
A duvet cover is a large, protective fabric covering for a comforter. Since many comforters are made from expensive goose down and are difficult to clean, a duvet cover is a fabric slip cover into which your comforter is inserted, keeping the comforter clean and protected.