diffusing screen vs light filter

diffusing screen and light filter both are nouns.

Word	Noun	Adjective	Verb	Adverb
diffusing screen	Yes	No	No	No
light filter	Yes	No	No	No

As nouns, diffusing screen and light filter are synonyms defined as:

diffusing screen and light filter: a transparent filter that reduces the light (or some wavelengths of the light) passing through it

diffusing screen (noun)	light filter (noun)
a transparent filter that reduces the light (or some wavelengths of the light) passing through it	a transparent filter that reduces the light (or some wavelengths of the light) passing through it