What's the difference between
and
Enter two words to compare and contrast their definitions, origins, and synonyms to better understand how those words are related.

Efficacy vs Coefficacy - What's the difference?

efficacy | coefficacy |

As nouns the difference between efficacy and coefficacy

is that efficacy is (uncountable) ability to produce a desired amount of a desired effect while coefficacy is joint efficacy; an instance of things working together.

efficacy

English

Noun

(-)
  • (uncountable) Ability to produce a desired amount of a desired effect.

    • Synonyms

    * efficacity

    Related terms

    * effect * effective * effectiveness * effectivity * effector * effectual * effectuate * efficacious * efficacity * efficiency * efficient

    External links

    * *

    coefficacy

    English

    Noun

    (-)
  • Joint efficacy; an instance of things working together.
    • History springs from the Son's coefficacy with the Father and the Spirit.
    (Webster 1913)