Firstly, both require light irradiation to emit light. However, fluorescent materials emit light with a longer wavelength than incident light, and the wavelength of reflected light does not change, but it may absorb some wavelengths of light.
Simply put, fluorescent materials can make you feel particularly eye-catching, but their brightness is not strong because they only change the color of some invisible light to become visible to the naked eye, making it more eye-catching. But they are all similar colors to the basic colors of fluorescent materials. Reflective materials reflect back no matter what light you shine on (directional, high-end products can also reflect at a large angle). Their characteristic is that regardless of the light, for example, blue signs on highways, yellow and white lights on cars, but blue signs are seen in the direction of drivers or passengers. The stronger the reflection of the primary color of the reflective material, the brighter it will feel when exposed to light. Reflective materials have an interesting characteristic, which is that they can be far or close, but they have the best strength at specific distances.