This is the 3725th most frequent Spanish word.
porqué
"Porqué" (noun): The reason or cause.
In this sentence, 'porqué' is used as a noun meaning 'the reason' and is accompanied by an article ('el').
Él no entendía el porqué de mi decisión.
He did not understand the reason behind my decision.
Here, 'por qué' is a question phrase meaning 'why,' used to inquire about the reason or cause for something.
¿Por qué no vienes conmigo al parque?
Why don't you come with me to the park?
In this case, 'porque' serves as a conjunction meaning 'because,' introducing a clause explaining the reason for an action.