TERM EN>FR efficiency, effectiveness

[Sonia Murray]

I normally translate both *efficiency* and *effectiveness* by *efficacité*
in French, but I am confronted to a text where both are used in association
as in the following sentence:

A strategy increases both your efficiency and effectiveness

Any ideas how to effectively and efficiently communicate the subtle
differences?

MMMTIA
Amitiés,
Sonia
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Sonia Murray, French Translator
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phone: +1 415 379 9277
fax: +1 415 379 9804