Culinary art is the art of cooking. The word "culinary" is defined as something related to, or connected with, cooking or kitchens. A culinarian is a person working in the culinary arts. A culinarian working in restaurants is commonly known as a cook or a chef. Culinary artists are responsible for skillfully preparing meals that are as pleasing to the palate as to the eye. Increasingly they are required to have a knowledge of the science of food and an understanding of diet and nutrition. They work primarily in restaurants, fast food chain store franchises, delicatessens, hospitals and other institutions. Kitchen conditions vary depending on the type of business, restaurant, nursing home etc.