"Curtain." Curtains tend to vary in length, while draperies usually fall all the way to the floor. The window treatment in this photo is considered a curtain. "Draperies" also can refer to lined or backed curtains with a fuller and heavier feel. Tip: If you don't like the appearance of a curtain but can't bring the fabric down to the floor because of an obstacle, consider using a hard window treatment, such as a blind.