fuzziness vs fogginess

fuzziness and fogginess both are nouns.

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

As nouns, fuzziness and fogginess are synonyms defined as:

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

Other synonyms of fuzziness include blurriness, indistinctness, softness.

fuzziness (noun)	fogginess (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