...but money has become by convention a sort of representative of demand; and this is why it has the name 'money' (nomisma)-because it exists not by nature but by law (nomos) and it is in our power to change it and make it useless. —Aristotle, Nicomachean Ethics [1133b 1].
In modern Greek, the word nomisma means "currency". It is also a term used by numismatists when referring to the pieces of money or coin in the plural nomismata an example of which is the Aes rude of Numa Pompilius (the 2nd King of Rome).
- Ancient Greek-NOMISMA: "money", The King James Version (KJV) New Testament Greek Lexicon; Strong's Number:3546 
- Aristotle, NICOMACHEAN ETHICS [1133b 1], translations: a) Thomas Taylor ; b) Sir (William) David Ross KBE ; c) Harris Rackham 
- Contemporatary Greek-NOMISMA: "currency"
- Pliny the Elder, The Natural History,BOOK XXXIV. THE NATURAL HISTORY OF METALS. CHAP. 1. (1.)--THE ORES OF BRASS., Editions and translations: English (ed. John Bostock and Henry Thomas Riley| Latin (ed. Karl Friedrich Theodor Mayhoff)