Have you ever wanted to know what people mean when they say the following terms! I found this information online.
Classical French cuisine (also known in France as cuisine bourgeoise). This includes all the classical French dishes which were at one time regional, but are no longer specifically regional. Food is rich and filling, with many dishes using cream-based sauces.
Haute cuisine is classical French cuisine taken to its most sophisticated and extreme. Food is elegant, elaborate and generally rich. Meals tend to be heavy, especially due to the use of cream and either large portions or many smaller portions. There is a strong emphasis on presentation (in particular, vegetables tend to be cut with compulsive precision and uniformity). The finest ingredients are used, and the meal is correspondingly expensive.
Cuisine Nouvelle. This style developed in the 1970s, as a reaction against the classical school of cooking. The food is simpler and lighter. Portions are smaller and less rich; the heavy cream sauces of the classical approach are particularly avoided. Cooking is less elaborate and quicker, with more emphasis on local and seasonal ingredients.
Cuisine du terroir. This focuses on regional specialties and is somewhat more rustic in nature. Local produce and food traditions are the main focus.