foggy vs fogginess

foggy is not a noun while fogginess is a noun.

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

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

foggy (adjective)	fogginess (adjective)
filled or abounding with fog or mist
indistinct or hazy in outline
stunned or confused and slow to react (as from blows or drunkenness or exhaustion)
obscured by fog