Chefe vs. chef
In Portuguese, the words chefe and chef are related but have distinct meanings and applications. Chefe is the general Portuguese term for a leader, while chef is a more specific loanword from French used in a culinary context.
Chefe
A2Chefe is the standard Portuguese word for boss, chief, leader, or head. It is a broad term used in any context where someone is in a position of authority, such as in an office, a project, or a tribe.
Eu preciso de aprovação do meu chefe para tirar férias.
(I need my boss's approval to take a vacation.)
Ele foi nomeado o novo chefe do departamento financeiro.
(He was appointed the new head of the finance department.)
O chefe da expedição deu as últimas instruções à equipe.
(The leader of the expedition gave the final instructions to the team.)
Naquele grupo de amigos, a Maria é a chefe.
(In that group of friends, Maria is the leader.)
O chefe de estado fará um pronunciamento hoje à noite.
(The head of state will make a speech tonight.)
Chef
B1Chef is a loanword from French (short for chef de cuisine) that specifically refers to a professional, trained cook, particularly the one who leads a kitchen. Its use is exclusively within the world of gastronomy.
O chef preparou um menu de degustação incrível.
(The chef prepared an incredible tasting menu.)
O meu sonho é me tornar um chef famoso em Paris.
(My dream is to become a famous chef in Paris.)
Aquele restaurante é conhecido por ter uma chef premiada.
(That restaurant is known for having an award-winning chef.)
Ela é uma chef especializada em cozinha tailandesa.
(She is a chef specializing in Thai cuisine.)
O chef é o chefe de toda a equipe da cozinha.
(The chef is the boss of the entire kitchen staff.)
Summary
The main difference is scope: chefe is the general Portuguese word for any leader, boss, or chief in any field. Chef is a specific term used only for a professional culinary artist who leads a kitchen. In essence, every chef is the chefe of their kitchen, but not every chefe is a chef.