Vegetarian:
may or may not wear fur/leather/wool, depending on their own choices.
Includes vegan, but usually implies one of the following:
Ovo-Lacto Vegetarian:
same as VEGAN, but also eats eggs and milk products. This is the most 'popular' form of Vegetarianism.
Ovo Vegetarian:
Same as VEGAN, but also eats eggs.
Lacto Vegetarian:
Same as VEGAN, but also eats milk products.
Semi-Vegetarian:
Eats less meat than average person. See also PSEUDO-VEGETARIAN.
Pseudo-Vegetarian:
Claims to be vegetarian, but isn't. Often used by VEGETARIANS to describe SEMI-VEGETARIANs, and PESCETARIANs.
Pescetarian:
Same as VEGETARIAN, but also consumes fish. (often is a person avoiding factory-farming techniques...) See also PSEUDO-VEGETARIAN.
Fruitarian:
Same as VEGAN, but only eats foods that don't kill the plant (apples can be picked without killing plant, carrots cannot).
Vegetable Consumer:
Means anyone who consumes vegetables. Not necessarily a VEGETARIAN.
Herbivore:
Mainly eats grass or plants. Not necessarily a VEGETARIAN.
Plant-Eater:
Mainly eats plants. Not necessarily a VEGETARIAN.
Non-meat-Eater:
Does not eat meat. Most definitions do not consider fish, fowl or seafood to be meat. Animal fats and oils, bonemeal and skin are not considered meat.