This is the 9665th most frequent Portuguese word.
cozinheiro
Cook; a person who prepares food.
In this sentence, 'cozinheiro' is used as a noun referring to a person whose profession is cooking.
O cozinheiro prepara o almoço na cozinha todos os dias.
The cook prepares lunch in the kitchen every day.
Here, 'cozinheira' is used as a feminine noun indicating Maria's aspiration to pursue cooking as a profession.
Maria quer se tornar uma cozinheira profissional e trabalhar em um restaurante famoso.
Maria wants to become a professional cook and work in a famous restaurant.
In this context, 'cozinheiro' denotes an individual with the specific role of cooking, relied upon for expertise and assistance.