Currency relative values of the different currencies. Currencies in this sense are defined by governments, and each type has limited boundaries of acceptance. Other definitions of the term "currency" are discussed in their respective synonymous articles banknote, coin, and money. The latter definition, pertaining to the currency systems of nations, is the topic of this article. Currencies can be classified into two monetary systems: fiat money and commodity money, depending on what guarantees the value (the economy at large vs. the government's physical metal reserves). Some currencies are legal tender in certain political jurisdictions. Others are simply traded for their economic
Currency lads and lasses of illegality, inferior quality, and subordination. By analogy, native-born colonials came to be known as "currency", in contrast to the British-born "sterling". The first reference in print to the native-born being called "currency" was in the "Sydney Gazette" of 13 September 1822, in a letter signed by "Lydia Languish" calling for more social events to be organised for "currency lasses". As applied to people rather money, the term originally had derogatory connotations – by the early 1820s, "currency had stuck for male and female native-born and everyone knew what it implied". However, it was soon reclaimed by the native-born as