If you are in a coma, are you "living" my friend was in a coma and was in a vegetable state, he now tells me he was not "living" because he had no function while being in a coma. is this true?

Coma : Coma is a state during which people are unaware or minimally aware of their surroundings and are not able to respond to stimulation. There are situations when, after trauma or surgery, people are kept in a medically induced comatose state during the early phase of treatment which often involved putting in tubes and airways. The person is as alive as someone who takes an overdose and is in coma because of the drugs. Brain death is when functions of the brain and brainstem are totally and permanently gone. Vegetative state is technically not brain death.