numismatics
the study or collection of coins, medals, paper money, etc.
When I grow up I want to be a Numismatician; but first I must do my numismatics homework.
numismatic
Someone who makes up big words to sound important. Recently added to the Diagnostic and Statistical Manual of Mental Disorders, 4th Edition.
Nellie from "Little House on the Prairie" is such a numismatic!
Numismatics
The study of coins and how they have changed throughout history.
When she grows up she wants to study Numismatics.