A person who cooks
Chef
A chef who is second in command of a kitchen, ranking directly below the head chef. In large kitchens,they generally manage members of the kitchen on behalf of the head chef, who is usually preoccupied with other tasks.
Sous-chef
This is the top rank in a restaurant that follows Brigade de Cuisine or Kitchen hierarchy. There is only one executive chef for a restaurant
Executive Chef or Maître Chef de Cuisine
One of the hallmarks of modernist cooking, it’s the process of shaping a liquid into spheres, usually resembling either a caviar or egg yolks.