Full Idea
Down to the last third of the fifth century, 'timoria', whose original and always primary sense is "vengeance", is THE word for "punishment".
Clarification
The Greek word is 'timoria'
Gist of Idea
In early Greece the word for punishment was also the word for vengeance
Source
Gregory Vlastos (Socrates: Ironist and Moral Philosopher [1991], p.186)
Book Reference
Vlastos,Gregory: 'Socrates: Ironist and Moral Philosopher' [CUP 1992], p.186