Reflection and refraction are two different phenomena that occur when light interacts with a surface or a medium.
Reflection is the bouncing back of light from a surface such as a mirror or a calm body of water. When light strikes a reflective surface it is bounced back in the same direction it came from. The angle of incidenceis the angle at which the light strikes the surface is equal to the angle of reflection is the angle at which the light bounces back.
Refraction is the bending of light as it passes through a medium with different refractive indices such as a prism or a glass lens. When light passes through a medium with a different refractive index than the medium it is coming from it bends or refracts. The amount of bending depends on the angle of incidence and the refractive index of the medium.