porqueconjunction
Porque means because in English. It is a conjunction.
- because
No salí porque hacía mucho frío.
I did not go out because it was very cold.
Cierra la ventana porque hace frío.
Close the window because it is cold.
Estoy contento porque mañana no trabajo.
I am happy because tomorrow I do not work.
Llegamos tarde porque el coche no funciona.
We arrived late because the car does not work.