What is the diff btwn a vegetarian and vegan?

Recently, the words: vegetarian and vegan have been resurfacing on my mind repeatedly, perhaps because of a new vegan fast food outlet popping out, VeganBurg. So I asked myself, what is the difference after all? I decided to approach my longtime, know-all friend, Mr Wikipedia and he told me:

A vegetarian will consume vegetables, fruits, nuts and plant-based products (for e.g. soy milk, almond cream, mock meat, etc) only; may include dairy products such as cow’s milk, eggs or honey and animal by-products like rennet and gelatin…But totally eliminate all animal meat, poultry and seafood from their diets!

A vegan, on the other hand, survives on vegetables, fruits, nuts and plant-based products only. They disapprove of commodity/commercial exploitation of all animals, fowl and sea creatures, to the extent of banning themselves from consuming dairy products, animal-derived products (gelatin, rennet) and using animal-related products such as wool, silk, fur and leather goods.

You might wonder whether both such diets will suffice a human body? Well, the answer is Yes, according to the health experts:

“The American Dietetic Association and Dietitians of Canada regard such a diet as appropriate for all stages of the life-cycle: It is the position of the American Dietetic Association that appropriately planned vegetarian diets, including total vegetarian or vegan diets, are healthful, nutritionally adequate, and may provide health benefits in the prevention and treatment of certain diseases. Well-planned vegetarian diets are appropriate for individuals during all stages of the life cycle, including pregnancy, lactation, infancy, childhood, and adolescence, and for athletes.” (http://en.wikipedia.org/wiki/Veganism)

In my closing summary: the results of such sacrificial diets not only produce a lighter body distant from common diseases such as hypertension, constipation, diabetes, etc…, protect all fauna by going full-force green but furthermore, it will cultivate a determined and strong-willed mind to battle off those temptations out there in the food world! Hence, I salute to all the vegetarians and vegans, you definitely have my utmost admiration!

*Other source of info: http://en.wikipedia.org/wiki/Vegetarianism