Skill vs. Efficiency — What's the Difference?

A skill is the learned ability to perform an action with determined results with good execution often within a given amount of time, energy, or both. Skills can often be divided into domain-general and domain-specific skills.

Efficiency is the (often measurable) ability to avoid wasting materials, energy, efforts, money, and time in doing something or in producing a desired result. In a more general sense, it is the ability to do things well, successfully, and without waste.

Proficiency, facility, or dexterity that is acquired or developed through training or experience

The quality or property of being efficient.

A developed talent or ability

The degree to which this quality is exercised

An art, trade, or technique, particularly one requiring use of the hands or body

The ratio of the effective or useful output to the total input in any system.

(Obsolete) A reason; a cause.

The ratio of the energy delivered by a machine to the energy supplied for its operation.

Capacity to do something well; technique, ability. Skills are usually acquired or learned, as opposed to abilities, which are often thought of as innate.

An efficiency apartment.

(obsolete) Discrimination; judgment; propriety; reason; cause.

The extent to which time is well used for the intended task.

(obsolete) Knowledge; understanding.

(dated) The quality of producing an effect or effects.

(obsolete) Display of art; exercise of ability; contrivance; address.

The extent to which a resource is used for the intended purpose; the ratio of useful work to energy expended.

Great, excellent.

(US) A one-room apartment.

(transitive) To set apart; separate.

The ratio of the output to the input of any system

To discern; have knowledge or understanding; to know how (to).

Skillfulness in avoiding wasted time and effort;

To know; to understand.

(intransitive) To have knowledge or comprehension; discern.

(intransitive) To have personal or practical knowledge; be versed or practised; be expert or dextrous.

To make a difference; signify; matter.

(video games) To spend acquired points in exchange for skills.

Discrimination; judgment; propriety; reason; cause.

Knowledge; understanding.

The familiar knowledge of any art or science, united with readiness and dexterity in execution or performance, or in the application of the art or science to practical purposes; power to discern and execute; ability to perceive and perform; expertness; aptitude; as, the skill of a mathematician, physician, surgeon, mechanic, etc.

Display of art; exercise of ability; contrivance; address.

Any particular art.

To know; to understand.

To be knowing; to have understanding; to be dexterous in performance.

To make a difference; to signify; to matter; - used impersonally.

An ability that has been acquired by training

Ability to produce solutions in some problem domain;