Sunlight when passing through a prism divides into seven colors (red, orange, yellow, green, blue, indigo, and violet) each of which has a specific and measurable wavelength. When mixed together these colors create white light (all the visible wavelengths).

the distribution of colors produced when light is dispersed by a prism

the band of colors (measured in nm) emitted by a light source.

Same as the "visible light" spectrum: electromagnetic energy between 380 (violet) and 770 (red) nanometers, which can be seen by the human eye.

All the radiant energy wave lengths that make human sight possible. The visible wave lengths include all colors and are measured in nanometers.

All wavelengths perceived by human sight, usually measured in nanometers (nm).

a range of colors from cool to warm.