The natural equipment to accomplish some small part of the meaner ambitions distinguishing able men from dead ones. In the last analysis ability is commonly found to consist mainly in a high degree of solemnity. Perhaps, however, this impressive quality is rightly appraised; it is no easy task to be solemn.

the quality of being able to perform; a quality that permits or facilitates achievement or accomplishment

possession of the qualities (especially mental qualities) required to do something or get something done; "danger heightened his powers of discrimination"

One of the six basic character qualities: Strength (Str), Dexterity (Dex), Constitution (Con), Intelligence (Int), Wisdom (Wis), and Charisma (Cha). Previous versions of Dungeons & Dragons also included Luck and Comliness (attractiveness) as abilities. SEE ABILITY SCORES. (D&D 3.5)

qualities we have as a person that we have inherited from parents.

The extent to which consumers have the resources (knowledge, intelligence, and money) necessary to make an outcome happen.