beam of light vs ray of light

beam of light and ray of light both are nouns.

Word	Noun	Adjective	Verb	Adverb
beam of light	Yes	No	No	No
ray of light	Yes	No	No	No

As nouns, beam of light and ray of light are synonyms defined as:

Other synonyms of beam of light include beam, irradiation, light beam, ray, shaft, shaft of light.

beam of light (noun)	ray of light (noun)
a column of light (as from a beacon)	a column of light (as from a beacon)