1. Different natures. Fasting refers to the precepts of religious people. It is a ritual that values ??the piety and purity of the soul. Vegetarian means not eating meat or fishy food.
2. The forbidden foods are different. When eating vegetarian food, not only do you not eat meat and fish, but you also cannot eat five pungent foods, namely: green onions, onions, garlic, garlic, and leeks. Be vegetarian and avoid fish and other meaty foods.
3. The precepts are different. When eating vegetarian food, not only do you not eat meat and fish, but also five pungent foods. You must not eat after noon. Not eating after noon is a precept set by the Buddha for monks. The correct term in the Vinaya is "eating not at the wrong time". This means that you cannot eat outside the permitted times. This time is after the sun reaches noon and until dawn the next day. During this time, eating is not allowed. Vegetarianism is not the vegetarian diet of Buddhists, and there are no precepts.