What are the four ways that an object can give off light?

How does temperature affect the amount and type of light emitted?What are the four ways that an object can give off light?
Light bulbs


and


some creatures under the sea.





fire


,


radiationWhat are the four ways that an object can give off light?
Heating to incandescence


Bioluminesence by chemical reaction


Electromagnetic stimulation (laser or maser, LED, plasma)


Fluorescence (chemicals in rocks or phosphors in lamp tubes re-emitting light at different wavelengths, but is this different from above?)


Cherenkov radiation luminance





Not sure of the second part, unless refering to continuous spectrum emission from black body, shift from the red to the blue as temp increases.