wellness vs eudaemonia

wellness and eudaemonia both are nouns.

Word	Noun	Adjective	Verb	Adverb
wellness	Yes	No	No	No
eudaemonia	Yes	No	No	No

As nouns, eudaemonia is a hypernym of wellness; that is, eudaemonia is a word with a broader meaning than wellness:

Other hypernyms of wellness include eudaimonia, upbeat, welfare, well-being, wellbeing.

wellness (noun)	eudaemonia (noun)
a healthy state of wellbeing free from disease	a contented state of being happy and healthy and prosperous