Numismatologist is a word that describes a person who collects and studies coins, medals, and other currency-related objects. Other words that can be used as a synonym for numismatologist include coin collector, coin enthusiast, coin buff, numismatics expert, or coin expert. Another term that can be used to describe a collector is a philatelist, who collects, studies, and deals with stamps and postal history. Other terms include exonumia collector, medal collector, and token collector. Overall, there are many different words that can describe a person who has a passion for collecting and studying currency-related objects, each with its own unique connotations and specific areas of interest.