Quilting can refer either to the process of creating a quilt or to the sewing of two or more layers of material together to make a thicker padded material. "Quilting" as the process of creating a quilt uses "quilting" as the joining of layers as one of its steps, often along with designing, piecing, appliqué, binding and other steps.
Origami quilts is a relatively new branch of origami. Here, paper is folded into units and many units join to form beautiful, planar mosaics. These can then be displayed on a tabletop or hung up against a wall.
Origami quilts may be considered a subset of modular origami.