QUICK ANSWER
"Quien" is a form of "quien", a pronoun which is often translated as "who". "El cual" is a phrase which is often translated as "which". Learn more about the difference between "el cual" and "quien" below.
el cual
A phrase is a group of words commonly used together (e.g., once upon a time).
1. (general)
a. which (things, animals)
El edificio posee un moderno gimnasio, el cual está localizado en la planta baja.The building features a modern gym, which is located on the first floor.
b. that (things, animals)
A último momento, el presidente decidió no utilizar el discurso en el cual pasé horas trabajando.At the last moment, the president decided not to use the speech that I spent hours working on.
quien(
kyehn
)A pronoun is a word that stands in for a noun (e.g., she).
1. (relative)
2. (indefinite)
a. anyone
Puedes elegir a quien quieras siempre y cuando levanten la mano.You can choose anyone you like as long as they raise their hand.
