usableness vs useableness

usableness and useableness both are nouns.

Word	Noun	Adjective	Verb	Adverb
usableness	Yes	No	No	No
useableness	Yes	No	No	No

As nouns, usableness and useableness are synonyms defined as:

usableness and useableness: the quality of being able to provide good service

Other synonyms of usableness include serviceability, serviceableness, usability.

usableness (noun)	useableness (noun)
the quality of being able to provide good service	the quality of being able to provide good service