ability

n 1: the quality of being able to perform; a quality that permits

or facilitates achievement or accomplishment [ant: {inability}]

2: possession of the qualities (especially mental qualities)

required to do something or get something done; "danger

heightened his powers of discrimination" [syn: {power}]

[ant: {inability}]

usability

The effectiveness, efficiency, and satisfaction

with which users can achieve tasks in a particular environment

of a product. High usability means a system is: easy to learn

and remember; efficient, visually pleasing and fun to use; and

quick to recover from errors.

{(http://www.orrnet.com/)}.

(1999-04-01)