Generally, a coverlet is thin like a blanket, but used on top of the bed like a bedspread.. A quilt is usually about the same size or slightly larger than a coverlet, but is thicker and warmer and used for warmth. A coverlet may also be quilted on top with a stitched pattern, but that does not make it a quilt.
What is the difference between a duvet and a quilt? What is a coverlet? Should you choose a bedspread or a blanket cover? And what the heck is a bed scarf?