The term 'Lamp Type' can refer to two different types of lamps: LAVA and HALOGEN. LAVA lamps are a type of decorative lamp that contain a colored wax-like substance that is heated and cooled by a light bulb, creating a mesmerizing effect. HALOGEN lamps are a type of incandescent lamp that use HALOGEN gas to increase the efficiency and lifespan of the bulb. Both types of lamps are popular for their unique lighting effects and are used in many different settings.