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"How" is an adverb which is often translated as "cómo", and "which" is a pronoun which is often translated as "cuál". Learn more about the difference between "how" and "which" below.
how(
hau
)An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
1. (manner)
a. cómo
How did you get here so quickly?¿Cómo llegaste tan rápido?
I don't know how to do this.No sé cómo hacer esto.
2. (degree)
a. cuán
How tall is he?¿Cuán alto es?
It doesn't matter how talented you are; you must practice.No importa cuán talentoso seas; tienes que practicar.
b. qué tan (Latin America)
Regionalism used in Latin America: all the countries in South America, Central America, and the Caribbean. Does not include Spain.
How sick is he?¿Qué tan enfermo está?
I don't know how tall he is.No sé qué tan alto es.
3. (state)
A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
A noun is a word referring to a person, animal, place, thing, feeling, or idea (e.g., man, dog, house).
which(
wihch
)A pronoun is a word that stands in for a noun (e.g., she).
a. cuál
Which are the classes that interest you this semester?¿Cuáles son las clases que te interesan este semestre?
Which do you prefer? The pasta or the salad?¿Cuál prefieres? ¿La pasta o la ensalada?
a. que
The invitation, which was mailed to you, is for our wedding.La invitación, que se te mandó, es para nuestra boda.
b. el cual
The village has a castle, which dates from the 12th century.El pueblo tiene un castillo, el cual data del siglo XII.
c. la cual
The actor's house, which is on top of a hill, has a wonderful view of LA.La casa del actor, la cual está en lo alto de una colina, tiene unas vistas maravillosas de Los Ángeles.
d. lo cual
She didn't support me when I needed her, which made me realize that she wasn't a real friend.No me apoyó cuando la necesité, lo cual me hizo pensar que no era una amiga de verdad.
e. los cuales
There are several books on the subject, which are available in the library.Existen varios libros sobre el tema, los cuales están disponibles en la biblioteca.
f. las cuales
He explained it using some scientific words, which I have forgotten.Lo explicó con unas palabras científicas, las cuales no recuerdo.
