What is vegetarianism?
It is called practice of abstaining from the consumption of meat
Is it the same thing as being vegan?
of course  A follower of either the diet or the philosophy is known as a vegan
Well that is a great way of eating clean
Clean eating
Clean eating is a way of life based on the belief that eating whole foods in their most natural state and avoiding processed foods such as refined sugar offers certain health benefits. Variations on the clean eating diet may also exclude gluten, grains, and dairy products and advocate the consumption of raw food.
The idea of "clean eating" has been criticized as lacking in scientific evidence and potentially posing health risks.
The clean eating concept has been associated in the media with Ella Mills, Natasha Corrett,
Veganism
Veganism is the practice of abstaining from the use of animal products, particularly in diet, and an associated philosophy that rejects the commodity status of animals. A follower of the diet or the philosophy is known as a vegan. Distinctions may be made between several categories of veganism. "Dietary vegans" (also known as strict vegetarians) refrain from consuming animal products, not only meat but also eggs, dairy products and other animal-derived substances. The term "ethical vegan" is often applied to those who