sunshine vs visible radiation

sunshine and visible radiation both are nouns.

Word	Noun	Adjective	Verb	Adverb
sunshine	Yes	No	No	No
visible radiation	Yes	No	No	No

As nouns, visible radiation is a hypernym of sunshine; that is, visible radiation is a word with a broader meaning than sunshine:

sunshine: the rays of the sun
visible radiation: (physics) electromagnetic radiation that can produce a visual sensation

Other hypernyms of sunshine include light, visible light.

sunshine (noun)	visible radiation (noun)
the quality of being cheerful and dispelling gloom	(physics) electromagnetic radiation that can produce a visual sensation
the rays of the sun
moderate weather; suitable for outdoor activities