A comforter (in American English), also known as a doona in Australian English, or a continental quilt (or simply quilt) or duvet in British English, is a type of bedding made of two lengths of fabric or covering sewn together and filled with insulative materials for warmth, traditionally down or feathers, wool or cotton batting, silk, or polyester and other down alternative fibers.
A bed sheet is a rectangular piece of cloth used either singly or in a pair as bedding, which is larger in length and width than a mattress, and which is placed immediately above a mattress or bed, but below blankets and other bedding. A bottom sheet is laid above the mattress, and may be either a flat sheet or a fitted sheet.
A pillow is a support of the body at rest for comfort, therapy, or decoration. Pillows are used by many species, including humans. Some types of pillows include throw pillows, body pillows, decorative pillows and many more. Pillows that aid sleeping are a form of bedding that supports the head and neck.