vs
QUICK ANSWER
"Who" is a form of "who", a pronoun which is often translated as "quién". "Whom" is a pronoun which is often translated as "quien". Learn more about the difference between "who" and "whom" below.
who(
hu
)A pronoun is a word that stands in for a noun (e.g., she).
a. quién
Hello? Who is calling?¿Hola? ¿Quién llama?
I don't know who he is, but he looks a lot like my brother.No sé quién es, pero se parece mucho a mi hermano.
2. (relative)
whom(
hum
)A pronoun is a word that stands in for a noun (e.g., she).
1. (relative)
a. quien (singular)
A word or phrase that is singular (e.g., el gato).
So this is the new boyfriend about whom I've heard so much.Así que éste es el nuevo novio de quien he oído tanto.
a. quién
Whom do you like more? The tall one or the short one?¿Quién te gusta más? ¿El alto o el bajo?
