ed* To eat.
fag* To digest (after eating).

Eating Deglutition, gulp, epulation [rare], mastication, manducation [rare], rumination; gastronomy, gastrology, pantophagy, hippophagy, carnivorism, carnivorousness, herbivority [rare], vegetarianism, ichthyophagy.
(Essives) carnivore; herbivore, vegetarian.