prestigious vs prestigiousness

prestigious is not a noun while prestigiousness is a noun.

Word	Noun	Adjective	Verb	Adverb
prestigious	No	Yes	No	No
prestigiousness	Yes	No	No	No

prestigious (noun)	prestigiousness (noun)
	a high standing achieved through success or influence or wealth etc.

prestigious (adjective)	prestigiousness (adjective)
exerting influence by reason of high status or prestige
having an illustrious reputation; respected