The term BUMPER ADORNMENT can be summarized as a decorative DECAL, which is a five-letter word. Decals are often used to customize the look of a car's bumper, and can range from simple designs to complex artwork. They are usually made of vinyl or plastic and are applied to the surface of the bumper with adhesive. Decals can also be used to advertise a business or organization, or to show support for a cause.