Economics (from Greek: οἶκος + νόμος; oikos "house" + nomos, "custom" or "law") is the rule or managment of the household to achieve better quality of life for all those who are part of it.
Chrematistics (from Greek: χρηματιστική) is any theory of wealth as measured in money.
In Politics, Book I, Aristotle established the fundamental difference between economics and chrematistics. The accumulation of money itself is an unnatural activity that dehumanizes those who practice it. Like Plato, he condemns the accumulation of wealth. Trade exchanges money for goods and usury creates money from money. The merchant does not produce anything: both are reprehensible from the standpoint of philosophical ethics.
Economy is closer than ever to being gone. Chrematistics has become what dictates human relations.