low-beam vs dim

low-beam and dim both are adjectives.

Word	Noun	Adjective	Verb	Adverb
low-beam	No	Yes	No	No
dim	No	Yes	Yes	No

low-beam (adjective)	dim (adjective)
used of headlights	made dim or less bright
	lacking in light; not bright or harsh
	offering little or no hope
	lacking clarity or distinctness
	slow to learn or understand; lacking intellectual acuity

low-beam (verb)	dim (verb)
	make dim or lusterless
	become dim or lusterless
	make dim by comparison or conceal
	become vague or indistinct
	switch (a car's headlights) from a higher to a lower beam