fogginess vs dimness

fogginess and dimness both are nouns.

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

As nouns, dimness is a hyponym of fogginess; that is, dimness is a word with a more specific, narrower meaning than fogginess:

Other hyponyms of fogginess include faintness, vagueness.

fogginess (noun)	dimness (noun)
the quality of being indistinct and without sharp outlines	the property of lights or sounds that lack brilliance or are reduced in intensity
an atmosphere in which visibility is reduced because of a cloud of some substance	the quality of being dim or lacking contrast
	the state of being poorly illuminated