What is the difference between commis chef betbeen and chef cook?

A commis is anapprentice in larger kitchens that works under a chef de partie in order to learn the station's responsibilities and operation.[ This may be a chef who has recently completed formal culinary training or is still undergoing training.

A chef is a person who cooks professionally. In a professional kitchen setting, the term is used only for the one person in charge of everyone else in the kitchen, the executive chef.