dim vs change intensity

dim is an adjective but change intensity is not an adjective.

Word	Noun	Adjective	Verb	Adverb
dim	No	Yes	Yes	No
change intensity	No	No	Yes	No

As verbs, change intensity is a hypernym of dim; that is, change intensity is a word with a broader meaning than dim:

dim (adjective)	change intensity (adjective)
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

dim (verb)	change intensity (verb)
make dim or lusterless	increase or decrease in intensity
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