A plant-based diet is a diet of any animal (including humans) based on foods derived from plants, including vegetables, whole grains, legumes and fruits, but with few or no animal products. 

"Plant-based diet" has been used to refer to the following diets:

• Vegan diet - no food from animal sources.
  • Fruitarian  - consists primarily of fruit.
  • Raw vegan - food is uncooked and sometimes dehydrated.
• Vegetarian - plant foods, may include eggs and dairy, but no meat.
• Ovo-lacto vegetarian - includes dairy and eggs.
• Ovo vegetarian - includes eggs but no dairy. 
• Lacto vegetarian - includes dairy but no eggs.
• Pescatarian - diet with eggs, dairy and seafood.
• Semi-vegetarian - with occasional inclusion of meat.