intransitiveness vs intransitivity

intransitiveness and intransitivity both are nouns.

Word	Noun	Adjective	Verb	Adverb
intransitiveness	Yes	No	No	No
intransitivity	Yes	No	No	No

As nouns, intransitiveness and intransitivity are synonyms defined as:

intransitiveness and intransitivity: the grammatical relation created by an intransitive verb

intransitiveness (noun)	intransitivity (noun)
the grammatical relation created by an intransitive verb	the grammatical relation created by an intransitive verb