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"Eficaz" is an adjective which is often translated as "effective", and "eficiente" is an adjective which is often translated as "efficient". Learn more about the difference between "eficaz" and "eficiente" below.
eficaz()
An adjective is a word that describes a noun (e.g., the big dog).
adjective
a. effective
El jarabe fue muy eficaz para la tos.The syrup was very effective against the cough.
a. efficient
Estamos desarrollando un proceso de producción de electricidad más eficaz.We are developing a more efficient process of producing electricity.
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eficiente()
An adjective is a word that describes a noun (e.g., the big dog).
adjective
a. efficient
Lorena es la empleada más eficiente en el departamento de mercadotecnia.Lorena is the most efficient employee in the marketing department.
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