different between facility vs efficacy

English

Etymology

From Middle French facilité, and its source, Latin facilit?s.

Pronunciation

• IPA^(key): /f??s?l?ti/
• Rhymes: -?l?ti

Noun

facility (countable and uncountable, plural facilities)

1. The fact of being easy, or easily done; absence of difficulty, simplicity. [from 16th c.]
2. Dexterity of speech or action; skill, talent. [from 16th c.]

   The facility she shows in playing the violin is unrivalled.

3. The physical means or contrivances to make something (especially a public service) possible; the required equipment, infrastructure, location etc. [from 19th c.]

   Transport facilities in Bangkok are not sufficient to prevent frequent traffic collapses during rush hour.
4. An institution specially designed for a specific purpose, such as incarceration, military use, or scientific experimentation.
5. (Canada, US, in the plural) A toilet. [from 20th c.]
6. (Scotland, law) A condition of mental weakness less than idiocy, but enough to make a person easily persuaded to do something against their better interest.
7. (dated) Affability.

Derived terms

• correctional facility

Translations

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.