UV vs actinic ray

UV and actinic ray both are nouns.

Word	Noun	Adjective	Verb	Adverb
UV	Yes	No	No	No
actinic ray	Yes	No	No	No

As nouns, actinic ray is a hypernym of UV; that is, actinic ray is a word with a broader meaning than UV:

UV: radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays
actinic ray: electromagnetic radiation that can produce photochemical reactions

Other hypernyms of UV include actinic radiation.

UV (noun)	actinic ray (noun)
radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays	electromagnetic radiation that can produce photochemical reactions