different between capacity vs efficacy

English

Etymology

From Middle English capacite, from Old French capacite, from Latin cap?cit?s, from capax (“able to hold much”), from capi? (“to hold, to contain, to take, to understand”).

Pronunciation

• IPA^(key): /k??pæs?ti/

Noun

capacity (countable and uncountable, plural capacities)

1. The ability to hold, receive or absorb
2. A measure of such ability; volume
3. The maximum amount that can be held

   It was hauling a capacity load.

   The orchestra played to a capacity crowd.

4. Capability; the ability to perform some task
5. The maximum that can be produced.
6. Mental ability; the power to learn
7. A faculty; the potential for growth and development
8. A role; the position in which one functions
9. Legal authority (to make an arrest for example)
10. Electrical capacitance.
11. (operations) The maximum that can be produced on a machine or in a facility or group.

    Its capacity rating was 150 tons per hour, but its actual maximum capacity was 200 tons per hour.

Synonyms

• throughput
• See also Thesaurus:skill

Derived terms

• capac
• capacitance
• capacitate
• capacitive
• capacitation
• capacitor

Translations

References

• capacity at OneLook Dictionary Search

Adjective

capacity

1. Filling the allotted space.

   There will be a capacity crowd at Busch stadium for the sixth game.

   • 2012, August 1. Owen Gibson in Guardian Unlimited, London 2012: rowers Glover and Stanning win Team GB's first gold medal

     At an overcast Eton Dorney, roared on by a capacity crowd including Prince Harry and Prince William, the volume rose as they entered the final stages.

Related terms

• capacious

Further reading

• capacity in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
• capacity in The Century Dictionary, New York, N.Y.: The Century Co., 1911.
• capacity at OneLook Dictionary Search

English

Etymology

From Old French efficace, from Late Latin effic?cia (“efficacy”), from effic?x (“efficacious”); see efficacious.

Pronunciation

• IPA^(key): /??f.?.k?.si/

Noun

efficacy (usually uncountable, plural efficacies)

1. Ability to produce a desired effect under ideal testing conditions.
   • 2005, Flay et al. Standards of Evidence: Criteria for Efficacy, Effectiveness and Dissemination DOI: 10.1007/s11121-005-5553-y

     Efficacy refers to the beneficial effects of a program or policy under optimal conditions of delivery, whereas effectiveness refers to effects of a program or policy under more real-world conditions.

2. Degree of ability to produce a desired effect.
   • 1996, Moskovich, Patent application PCT/US1996/003658

     Toothbrush with improved efficacy

Synonyms

• efficacity

Related terms

Translations

Further reading

• efficacy in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
• efficacy in The Century Dictionary, New York, N.Y.: The Century Co., 1911.