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
Shall and will "shall" all sin from time to time" (where "shall" denotes simple futurity), but instead gives the highly misleading impression that the original word was "should" (meaning "ought to"). Shall and will Shall and will are two of the English modal verbs. They have various uses, including the expression of propositions about the future, in what is usually referred to as the future tense of English. The traditional prescriptive grammar rule stated that, when expressing pure futurity (without any additional meaning such as desire or command), "shall" was to be used when the subject was in the first person ("I" or