This is the 677th most frequent Catalan word.
cuina
"Cuina" means "kitchen" or "cuisine" in English.
In this sentence, 'cuina' is used as a noun referring to the kitchen.
La cuina de la tieta és molt moderna.
The aunt's kitchen is very modern.
Here, 'cuina' refers to the activity or art of cooking.
Ell estudia cuina a l'escola d'hostaleria.
He studies cooking at the hospitality school.
In this context, 'cuina' is a verb meaning 'he cooks'.