stateliness vs stately

stateliness is a noun but stately is not a noun.

Word	Noun	Adjective	Verb	Adverb
stateliness	Yes	No	No	No
stately	No	Yes	No	No

stateliness (noun)	stately (noun)
an elaborate manner of doing something
impressiveness in scale or proportion

stateliness (adjective)	stately (adjective)
	refined or imposing in manner or appearance; befitting a royal court
	impressive in size, manner, or appearance
	of size and dignity suggestive of a statue