useableness vs usableness

useableness and usableness both are nouns.

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

As nouns, useableness and usableness are synonyms defined as:

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

Other synonyms of useableness include serviceability, serviceableness, usability.

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