Yes, it is possible to include all the nutrients in a vegan diet to make it complete however; nutrients like iron, calcium, and vitamin D are a little more difficult to get.
In a vegetarian diet, meat is not eaten but animal products like egg and cheese may be. In a vegan diet meat is avoided, and also any animal products like eggs and cheese are off limits.
A vegan diet is. Vegetarian diets may still contain all those processed ingredients... but the point of veganism is to cut out all of those things. But when it comes to which is better, it is really...