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"Cuán" is a form of "cuán", an adverb which is often translated as "how". "Cual" is a form of "cual", a pronoun which is often translated as "which". Learn more about the difference between "cuán" and "cual" below.
cuán(
kwahn
)An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
1. (formal) (to what degree)
A word or phrase used to refer to the second person formal “usted” by their conjugation or implied context (e.g., usted).
a. how
¿Cuán profunda puede ser el agua cerca de esas rocas?How deep might the water be around those rocks?
a. how
Es fácil hablar, pero cuán difícil es poner en práctica los principios.It's easy to talk, but how difficult it is to put principles into practice.
cual(
kwahl
)A pronoun is a word that stands in for a noun (e.g., she).
1. (relative)