This is the 2215th most frequent Catalan word.
costum
"Costum" means "custom" or "habit" in English.
In this case, 'costum' signifies the practices or ways of behavior adopted by a group of people.
No és feina meva canviar els seus costums.
It is not my job to change their customs.
In this sentence, 'costum' refers to a traditional practice or habit that is characteristic of a specific culture or community.
És un costum típic de la regió menjar castanyes per la Castanyada.
It is a typical custom of the region to eat chestnuts for the Castanyada.
Here, 'costum' points to a personal habit or routine performed regularly by someone.