Definition of ability :
The quality or state of being able; power to perform, whether physical, moral, intellectual, conventional, or legal; capacity; skill or competence in doing; sufficiency of strength, skill, resources, etc.; - in the plural, faculty, talent.
energy, capacity, ineptitude, ignorance, index, superpower, power, eligibility, artistry, mogul, knowledge, tact, quickness, efficacy, business leader, cogency, bent, intelligence, king, major power, understanding, force, mightiness, might, savvy, comprehension, susceptibility, gift, tycoon, background, top executive, cleverness, art, sense, finesse, head, magnate, inability, exponent, incompetence, faculty, artifice, qualification, efficiency, strength, world power, baron, ingenuity, great power, sufficiency, powerfulness, touch, office, competency, potency, command, readiness, inexperience, expertness, finish, big businessman, what it takes
skill (part of speech: noun)
craft, proficiency, adroitness, dexterity, deftness, know-how, competence, aptitude, knack, acuity, flair, experience, facility, adeptness, technique, skill, genius, talent, expertise, capability, artfulness, mastery, cunning
- He hasn't the same ability; not half. - "The Reverberator", Henry James.
- Wisdom is more than knowledge: it is Knowledge applied to life, the ability to make use of the knowledge well. - "A Poor Man's House", Stephen Sydney Reynolds.
- Bohemond had neither less ambition nor less courage and ability than his father. - "A Popular History of France From The Earliest Times Volume I. of VI.", Francois Pierre Guillaume Guizot.