modest vs modestness

modest is not a noun while modestness is a noun.

Word	Noun	Adjective	Verb	Adverb
modest	No	Yes	No	No
modestness	Yes	No	No	No

modest (noun)	modestness (noun)
	the property of being moderate in price or expenditures
	freedom from vanity or conceit

modest (adjective)	modestness (adjective)
not offensive to sexual mores in conduct or appearance
marked by simplicity; having a humble opinion of yourself
humble in spirit or manner; suggesting retiring mildness or even cowed submissiveness
low or inferior in station or quality
relatively moderate, limited, or small
not large but sufficient in size or amount
free from pomp or affectation