What's the difference between ataraxia and ataraxy?

Ataraxia

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Definition:

• (n.) Alt. of Ataraxy

Example Sentences:

Ataraxy

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Definition:

• (n.) Perfect peace of mind, or calmness.

Example Sentences:

• (1) This can be quite easily achieved in the stillness of mind induced in a simple meditative experience known as Mental Ataraxis.