What context can I use each word in?
Learn when and how to use these words with these examples!
efficacy
Example
The efficacy of this new drug in treating cancer has been proven through clinical trials. [efficacy: noun]
Example
The efficacy of the marketing campaign was evident in the increased sales figures. [efficacy: noun]
potency
Example
The potency of this painkiller is higher than the previous one I was taking. [potency: noun]
Example
The potency of his anger was evident in the way he slammed the door. [potency: noun]
Good things to know
Which word is more common?
Efficacy is more commonly used in medical or scientific contexts, while potency can be used in a wider range of contexts, including everyday language.
What’s the difference in the tone of formality between efficacy and potency?
Efficacy is generally considered a more formal word, while potency is more versatile and can be used in both formal and informal contexts.
