crookedness vs crooked

crookedness is a noun but crooked is not a noun.

Word	Noun	Adjective	Verb	Adverb
crookedness	Yes	No	No	No
crooked	No	Yes	No	No

crookedness (noun)	crooked (noun)
having or distinguished by crooks or curves or bends or angles
the quality of being deceitful and underhanded
a tortuous and twisted shape or position

crookedness (adjective)	crooked (adjective)
	having or marked by bends or angles; not straight or aligned
	not straight; dishonest or immoral or evasive
	irregular in shape or outline
	having the back and shoulders rounded; not erect