fogginess vs blurriness

fogginess and blurriness both are nouns.

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

As nouns, fogginess and blurriness are synonyms defined as:

fogginess and blurriness: the quality of being indistinct and without sharp outlines

Other synonyms of fogginess include fuzziness, indistinctness, softness.

fogginess (noun)	blurriness (noun)
the quality of being indistinct and without sharp outlines	the quality of being indistinct and without sharp outlines
an atmosphere in which visibility is reduced because of a cloud of some substance