Praxis

The given meaning “sex” is more euphemism than a literal translation of the word, in a similar way to how “getting some action” is a euphemism for sex in English. πρᾶξις could also be used in the context of military actions, casting spells, business transactions, collecting debts, succeeding or getting results at something, exercising, having dexterity, or exacting revenge.

In terms of the epithet for the goddess Aphrodite, Praxis means "action" - as in, the action of sexual intercourse (source: theoi.com).