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, pronounced due-vay (rhymes with today), also known as a duvet insert, is a comforter that is filled with down (a really good lightweight insulator) to keep you warm and cozy while sleeping. A duvet cover covers and protects the duvet, just like a pillow case, or sham, covers and protects a pillow. The word duvet, derived from Old French (we're told, we don't actually speak old French), means down and has been used to describe a down or feather filled comforter for hundreds of years.