FRP is a general term for fiber-reinforced plastics, which are composite materials composed of fibers and a resin matrix. Depending on the type of fiber, they can be classified into GFRP, CFRP, and others. GFRP, or glass fiber-reinforced plastic, commonly known as fiberglass, is the most commonly used and representative type of FRP. The two have an inclusive relationship rather than being opposites. FRP covers a broader range, while GFRP specifically refers to FRP reinforced with glass fibers, featuring low cost, easy processing, and wide application. They are often used interchangeably in daily non-technical contexts, but must be clearly distinguished in professional settings.