What are Exonumia and how is collecting Exonumia different from numismatic items?

Exonumia – (ˌɛksəʊˈnjuːmɪə, ˌɛksəʊˈnuːmɪə) plural noun – any non-monetary object of interest to numismatists, such as B. medals, tokens, etc. Exonumia refers to the study and collection of numismatic items that do not fall within the realm of traditional coins, paper money, and bullion. This includes a range of objects...