Etymology

From Ancient Greek νόμισμα ‎(nómisma) "money, the current coin of a state, custom", from νομίζω ‎(nomízō) (nomizo) "to hold or own as a custom, usage, to use customarily, practise, to be used to a thing", hence "to make common use of", from νόμος ‎(nómos) (nomos) "anything assigned, a usage, custom, law, ordinance", from νέμω ‎(némō) (nemo) "to keep, to hold, to watch".