reflexiveness vs reflexive

reflexiveness and reflexive both are nouns.

Word	Noun	Adjective	Verb	Adverb
reflexiveness	Yes	No	No	No
reflexive	Yes	Yes	No	No

reflexiveness (noun)	reflexive (noun)
the coreferential relation between a reflexive pronoun and its antecedent	a personal pronoun compounded with -self to show the agent's action affects the agent
(logic and mathematics) a relation such that it holds between an element and itself

reflexiveness (adjective)	reflexive (adjective)
	referring back to itself
	without volition or conscious control