usability

As a noun usability

is the state or condition of being usable.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between usability and handling

is that usability is the state or condition of being usable while handling is a touching, controlling, managing, using, take care of, etc, with the hand or hands, or as with the hands.

As a verb handling is

.

As nouns the difference between usability and null

is that usability is the state or condition of being usable while null is zero, nil; the cardinal number before einn.

As nouns the difference between attainability and usability

is that attainability is the state of being attainable while usability is the state or condition of being usable.

As nouns the difference between usability and utilisation

is that usability is the state or condition of being usable while utilisation is the act of using something.

As nouns the difference between utilization and usability

is that utilization is an alternative spelling of lang=en while usability is the state or condition of being usable.

As nouns the difference between reliability and usability

is that reliability is the quality of being reliable, dependable or trustworthy while usability is the state or condition of being usable.

As nouns the difference between functionality and usability

is that functionality is the ability to perform a task or function; that set of functions that something is able or equipped to perform while usability is the state or condition of being usable.

As nouns the difference between participation and usability

is that participation is the act or process of participating while usability is the state or condition of being usable.

As nouns the difference between usage and usability

is that usage is the manner or the amount of using; use while usability is the state or condition of being usable.