White light is made of an infinite number of different colours
White light is made of an infinite number of different colours, from violet at one end through to red at the other. This band of visible colours is known as the colour spectrum. Light at the blue end has a shorter wavelength and higher frequency than light at the red end. Most people can see only seven different colours in the spectrum: red, orange, yellow, green, blue, indigo, and violet.In physics refraction is the change in direction of a wave passing from one medium to another or from a gradual change in the medium. Refraction of light is the most commonly observed
Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated. Common example include the reflection of light.
The difference as outlined in the above points is refraction is light that can pass through objects and reflection is light that bounces back off an object.