different between eudaemonics vs eudemonics

English

Ancient Greek ???????????? (eudaimonikós, “conducive to happiness”).

eudaemonics (uncountable)

That part of ethics that deals with happiness; the science of happiness, contrasted with aretaics.
- 1876, John Grote, Treatise on Moral Ideals
  the unideal form of eudæmonics of which I have spoken is hedonics , or a science of indolentia

eudaemonics in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.

eudemonics (uncountable)

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