Numismatology refers to the study of coins, currency, and other forms of currency. There are several synonyms for the word "numismatology" that can be used interchangeably such as numismatics, coin collecting, currency study, and coinage theory. The field of numismatology is often associated with hobbyists and collectors who are interested in the history, art, and value of coins. Many numismatologists collect rare or unusual coins and currency from various countries and eras. Regardless of the term used, the study of numismatology offers insight into the cultural and economic history of different societies around the world.