Overnutrition is the overconsumption of nutrients by consuming too much food on a regular or habitual basis to the point that it becomes harmful to your health.
Overeating varies from overnutrition philosophically, but they are fundamentally the same in action. In contrast, overeating is a compulsion considered a psychological disease; overnutrition is the voluntary choice to take more food than you require, even if you are unaware of it.