subduedness vs dimness

subduedness and dimness both are nouns.

Word	Noun	Adjective	Verb	Adverb
subduedness	Yes	No	No	No
dimness	Yes	No	No	No

As nouns, subduedness and dimness are synonyms defined as:

subduedness and dimness: the property of lights or sounds that lack brilliance or are reduced in intensity

subduedness (noun)	dimness (noun)
the property of lights or sounds that lack brilliance or are reduced in intensity	the property of lights or sounds that lack brilliance or are reduced in intensity
a disposition to be patient and long suffering	the quality of being dim or lacking contrast
	the state of being poorly illuminated