Sunray and Uv

Sunray noun - A ray of artificial ultraviolet light from a sunray lamp.

Uv and sunray are semantically related. In some cases you can use "Uv" instead a noun "Sunray".

Uv noun - Radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays.

Sunray and uv are semantically related. Sometimes you can replace term "Sunray" with "Uv", this nouns are similar.