This is the 760th most frequent Catalan word.
perquè
"Perquè" in Catalan means "because" or "why," depending on context.
Here, 'perquè' introduces a causal clause to explain the reason for not coming.
No vaig venir perquè estava ocupat.
I did not come because I was busy.
Here, 'Per què' is used as a question phrase to ask for the reason.
Per què has arribat tard?
Why did you arrive late?
Here, 'perquè' is used as a conjunction to indicate the cause of studying regularly.