This is the 481st most frequent Catalan word.
llum
Light.
Here, 'llum' refers to natural light, specifically sunlight.
La llum del sol entra per la finestra al matí.
The sunlight enters through the window in the morning.
In this sentence, 'llum' refers to artificial light from a light fixture.
Encén la llum abans d'entrar a l'habitació.
Turn on the light before entering the room.
'Llum' is metaphorically used to denote spiritual or symbolic light.