The difference:
Philosophers such as Aristotle had a much richer conception of fulfillment than our word happiness suggests. The Greek term eudaimonia connotes the best way of life, or human flourishing. Aristotle was a biologist. He thought of human beings as living organisms that can wither if our being is not properly nourished or live well and thus blossom and flourish. Just as health is an objective state of the body when it is thriving, so flourishing is an objective state of the human person––the psycho-physical organism––when we are fulfilling our unique potential.
For Aristotle, happiness or flourishing is not a feeling or a state but an activity of living. It is the way of living that expresses all we are meant to be. Pleasure or joy is the subjective dimension of this experience. When we live well, we feel pleasure or joy.
The Dish 