sunray vs ultraviolet light

sunray and ultraviolet light both are nouns.

Word	Noun	Adjective	Verb	Adverb
sunray	Yes	No	No	No
ultraviolet light	Yes	No	No	No

As nouns, ultraviolet light is a hypernym of sunray; that is, ultraviolet light is a word with a broader meaning than sunray:

sunray: a ray of artificial ultraviolet light from a sunray lamp
ultraviolet light: radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays

Other hypernyms of sunray include ultraviolet, ultraviolet illumination, ultraviolet radiation, UV.

sunray (noun)	ultraviolet light (noun)
a ray of sunlight	radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays
a ray of artificial ultraviolet light from a sunray lamp
herb having a basal cluster of grey-green leaves and leafless stalks each with a solitary broad yellow flower head; desert areas Idaho to Arizona