Ability vs Capability vs Power vs Skill

When to use each in English, with meaning, register, and examples.

Ability

Top 1,000 (very common)A2noun

Capability

Top 2,000 (common)C1noun

Power

Top 1,000 (very common)A2noun

Skill

Top 1,000 (very common)A1noun
 AbilityCapabilityPowerSkill
Pronunciation🇬🇧 /["/əˈbɪləti/"]/🇺🇸 /["/əˈbɪləti/"]/🇬🇧 /["/ˌkeɪpəˈbɪləti/"]/🇺🇸 /["/ˌkeɪpəˈbɪləti/"]/🇬🇧 /["/ˈpaʊə(r)/"]/🇺🇸 /["/ˈpaʊər/"]/🇬🇧 /["/skɪl/"]/🇺🇸 /["/skɪl/"]/
MeaningThe skill to do something.The ability to do something.The ability to do something or to control people or things.The ability to do something well, usually because of training or practice.
ExampleShe has the ability to learn new languages quickly.Her capability as a leader impressed everyone at the meeting.The power of the wind can generate electricity.He has a skill for painting that impresses everyone.
RegisterNeutralNeutralNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)Top 1,000 (very common)Top 1,000 (very common)
CEFR levelA2C1A2A1
Part of speechnounnounnounnoun
Collocationsexceptional, extraordinary, great, level, have, possess, retain, ability in, to the best of your ability, high, limited, low, assess, measure, test, level, range, a range of ability, a range of abilitiesadvanced, enhanced, limited, demonstrate, have, possess, beyond somebody’s capability, within somebody’s capability, capability for, advanced, enhanced, limited, demonstrate, have, possess, beyond somebody’s capability, within somebody’s capability, capability forabsolute, ultimate, considerable, come to, rise to, assume, be concentrated in (the hands of somebody/​something), flow from somebody/​something, lie with somebody/​something, struggle, relations, structure, in power, in somebody’s power, power of, abuse of power, the balance of power, a bid for power, absolute, ultimate, considerable, come to, rise to, assume, be concentrated in (the hands of somebody/​something), flow from somebody/​something, lie with somebody/​something, struggle, relations, structure, in power, in somebody’s power, power of, abuse of power, the balance of power, a bid for power, full, reduced, electric, generate, produce, provide (somebody/​something with), drive something, run something, go off, cable, grid, line, power for, a source of power, full, reduced, electric, generate, produce, provide (somebody/​something with), drive something, run something, go off, cable, grid, line, power for, a source of power, awesome, great, real, awesome, great, real, air, combat, military, have, possess, use, beyond somebody/​something’s power, in somebody’s power, within somebody’s power, at the height of your powers, at the peak of your powers, at the zenith of your powers, air, combat, military, have, possess, use, beyond somebody/​something’s power, in somebody’s power, within somebody’s power, at the height of your powers, at the peak of your powers, at the zenith of your powers, air, combat, military, have, possess, use, beyond somebody/​something’s power, in somebody’s power, within somebody’s power, at the height of your powers, at the peak of your powers, at the zenith of your powers, absolute, ultimate, considerable, come to, rise to, assume, be concentrated in (the hands of somebody/​something), flow from somebody/​something, lie with somebody/​something, struggle, relations, structure, in power, in somebody’s power, power of, abuse of power, the balance of power, a bid for power, great, major, world, air, combat, military, have, possess, use, beyond somebody/​something’s power, in somebody’s power, within somebody’s power, at the height of your powers, at the peak of your powers, at the zenith of your powers, air, combat, military, have, possess, use, beyond somebody/​something’s power, in somebody’s power, within somebody’s power, at the height of your powers, at the peak of your powers, at the zenith of your powers, absolute, ultimate, considerable, come to, rise to, assume, be concentrated in (the hands of somebody/​something), flow from somebody/​something, lie with somebody/​something, struggle, relations, structure, in power, in somebody’s power, power of, abuse of power, the balance of power, a bid for powerconsiderable, consummate, extraordinary, range, set, have, possess, combine, level, set, acquisition, with skill, skill as, skill at, a degree of skill, a level of skill, a lack of skill, considerable, consummate, extraordinary, range, set, have, possess, combine, level, set, acquisition, with skill, skill as, skill at, a degree of skill, a level of skill, a lack of skill
Antonymsinability, ineptnessincapability, inabilityweakness, ineffectivenessinability, ignorance
Common mistakesConfused with 'capability' — 'ability' refers to a skill, while 'capability' refers to the potential to develop a skill., Using 'ability' without a verb or context can make sentences unclear., Incorrectly pluralizing as 'abilities' when referring to a single skill.Confusing with 'capacity' which refers to volume or quantity., Using it as a verb instead of a noun., Misplacing the emphasis in pronunciation.'Power' as a verb — learners often mistakenly use 'power' when they mean to say 'empower'., Confusing 'power' with 'might', as they have different nuances., Misusing 'power' in phrases, e.g., 'the power of' requires a specified noun.Confused with 'ability' — skill usually implies training or practice., Used as a verb incorrectly — skill is a noun.
Usage notesUse 'ability' in contexts where referring to someone's skills or talents. Avoid it in very casual conversations where simpler words like 'skill' may be more appropriate.Use 'capability' in professional or academic contexts to discuss skills or potential. It's not commonly used in casual conversations.Used in both formal and informal contexts. In discussions about politics or leadership, 'power' often has a weighty connotation, while in casual settings it might refer to electricity or strength. Avoid using it in overly casual contexts when discussing serious topics.Use 'skill' to talk about abilities in various contexts, from sports to arts. Avoid using it in very informal settings where simpler terms like 'talent' might fit better.

Frequently asked questions: Ability vs Capability vs Power vs Skill

What's the difference between Ability, Capability, Power, and Skill?

Ability: The skill to do something. Capability: The ability to do something. Power: The ability to do something or to control people or things. Skill: The ability to do something well, usually because of training or practice.

Which is more advanced: Ability, Capability, Power, and Skill?

Capability is the highest level, at C1, on the CEFR scale.

Are Ability, Capability, Power, and Skill the same CEFR level?

Ability: A2, Capability: C1, Power: A2, Skill: A1 on the CEFR scale.

What part of speech are Ability, Capability, Power, and Skill?

Ability: noun, Capability: noun, Power: noun, Skill: noun.

Can you show an example of each?

Ability: She has the ability to learn new languages quickly. Capability: Her capability as a leader impressed everyone at the meeting. Power: The power of the wind can generate electricity. Skill: He has a skill for painting that impresses everyone.

Can I use Ability, Capability, Power, and Skill interchangeably?

Not always. Ability, Capability, Power, and Skill are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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