Ability vs Capability

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

Ability

Top 1,000 (very common)A2noun

Capability

Top 2,000 (common)C1noun
Most common: Ability
 AbilityCapability
Pronunciation🇬🇧 /["/əˈbɪləti/"]/🇺🇸 /["/əˈbɪləti/"]/🇬🇧 /["/ˌkeɪpəˈbɪləti/"]/🇺🇸 /["/ˌkeɪpəˈbɪləti/"]/
MeaningThe skill to do something.The ability to do something.
ExampleShe has the ability to learn new languages quickly.Her capability as a leader impressed everyone at the meeting.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR levelA2C1
Part of speechnounnoun
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 for
Antonymsinability, ineptnessincapability, inability
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.
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.

Frequently asked questions: Ability vs Capability

What's the difference between Ability and Capability?

Ability: The skill to do something. Capability: The ability to do something.

Which is more common: Ability and Capability?

Ability is the most common in everyday English.

Which is more advanced: Ability and Capability?

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

Are Ability and Capability the same CEFR level?

Ability: A2, Capability: C1 on the CEFR scale.

What part of speech are Ability and Capability?

Ability: noun, Capability: 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.

Can I use Ability and Capability interchangeably?

Not always. Ability and Capability 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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