Currency money or book money, which are fiat money. Currency money Currency money is money in full circulation that takes its value from the precious metal it contains, that is, its market value is (almost) the value of the metal it contains (apart from the Seigniorage or the minters' profit), though this is always overcompensated for in coins and banknotes from a country undergoing debasement. Currency money is usually made of silver or gold, but in very rare cases plated metal and even copper may be used. Currency money is commodity money, as opposed to coins whose metal value is less than
Shall and will futurity. In practice, however, this rule is often not observed – the two auxiliaries are used interchangeably, with "will" being far more common than "shall". This is discussed in more detail in the following sections. According to "Merriam Webster's Dictionary of English Usage", the distinction between "shall" and "will" as future markers arose from the practice of Latin teaching in English schools in the 14th century. It was customary to use "will" to translate the Latin "velle" (meaning to wish, want or intend); this left "shall" (which had no other equivalent in Latin) to translate the Latin future tense. This