transitiveness vs transitivity

transitiveness and transitivity both are nouns.

Word	Noun	Adjective	Verb	Adverb
transitiveness	Yes	No	No	No
transitivity	Yes	No	No	No

As nouns, transitiveness and transitivity are synonyms defined as:

transitiveness and transitivity: the grammatical relation created by a transitive verb

transitiveness (noun)	transitivity (noun)
the grammatical relation created by a transitive verb	the grammatical relation created by a transitive verb
	(logic and mathematics) a relation between three elements such that if it holds between the first and second and it also holds between the second and third it must necessarily hold between the first and third