Question

what is The Difference between Happiness and 'Eudaimonia'

Answer 1

Eudaimonia is a Greek word commonly translated as happiness or welfare; however, "human flourishing" has been proposed as a more accurate translation.

And the term Happiness relates to: In philosophy, happiness translates the Greek concept of eudaimonia and refers to the good life, or flourishing, rather than simply an emotion. In psychology, happiness is a mental or emotional state of well-being which can be defined by, among others, positive or pleasant emotions ranging from contentment to intense joy.