Numismatics is the study or collection of paper money, coins, and often medals.
Banknote is a piece of paper issued by a bank representing its promise to pay a specific sum to the bearer on demand and acceptable as money.
Note is a piece of paper currency.
Paper money is currency printed on paper. Includes all the various materials that have served as paper surrogates, for instance the polymer notes.
Thirteen important points that make a bill valuable and worth collect.
The presentation below is a simple guide for people who wants to start a paper money collection.