UV vs ultraviolet light

UV and ultraviolet light both are nouns.

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

As nouns, UV and ultraviolet light are synonyms defined as:

UV and ultraviolet light: radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays

Other synonyms of UV include ultraviolet, ultraviolet illumination, ultraviolet radiation.

UV (noun)	ultraviolet light (noun)
radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays	radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays