high beam vs beam of light

high beam and beam of light both are nouns.

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

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

high beam: the beam of a car's headlights that provides distant illumination
beam of light: a column of light (as from a beacon)

Other hypernyms of high beam include beam, irradiation, light beam, ray, ray of light, shaft, shaft of light.

high beam (noun)	beam of light (noun)
the beam of a car's headlights that provides distant illumination	a column of light (as from a beacon)