A Picture Border is an ornamental border that is placed around a picture or photograph. It is usually made of wood, metal, or plastic and can be decorated with intricate designs. The term 'Picture Border' is composed of two words: MAT (3 letters) and FRAME (5 letters). A MAT is a thin piece of material that is placed around the edge of a picture to create a border. A FRAME is a structure that is used to hold a picture in place. Together, these two components form a Picture Border.