In common language cash refers to money in the physical form of currency, such as banknotes and coins.

In bookkeeping and finance, cash refers to current assets comprising currency or currency equivalents that can be accessed immediately or near-immediately (as in the case of money market accounts). Cash is seen either as a reserve for payments, in case of a structural or incidental negative cash flow or as a way to avoid a downturn on financial markets.

The word is variously attributed. Some claim that the word "cash" comes from the modern French word caisse, which means (money) box, from the Provençal word caissa, from the Italian cassa, from the Latin capsa all meaning box. In the 18th century, the word passed to refer to the money instead of the actual box containing it. Another claim is that it was derived from Tamil word kāśu (Tamil: காசு) meaning a coin, by East India Company.Kāśu itself is derived from kārṣāpaṇam, a currency which was used by the Mahajanapadas in 6th century BC.

"Cash" used as a verb means "to convert to cash"; for example in the expression "to cash a cheque".

2015 (MMXV) will be a common year starting on Thursday. In the Gregorian calendar, it is the 2015th year in the Common Era (or Anno Domini), the 15th year of the 3rd millennium and 21st century, and the 6th of the 2010s decade.

An episode (from Greek ἐπεισόδιον – epeisodion, "parenthetic addition") is a part of a dramatic work such as a serial television or radio program. An episode is a part of a sequence of a body of work, akin to a chapter of a book. The term sometimes applies to works based on other forms of mass media as well, as in Star Wars. Episodes of news programs are also known as editions.

Episodes which end in the middle of a climactic moment are often called cliffhangers, after the name used for early movie serials. Such episodes can be nearly daily occurrences in soap operas and are frequently used in season finales of many prime time shows.

Episodes can be part of a larger story arc stretched out over a time period covering one or more seasons, or even an entire series run. This is especially prevalent in dramatic television series, including soap operas or science fiction series. Other genres to feature story arcs include comedies and animated programming.

The idea of stories being told in episodes has origins in serialized literature, and in Aristotle's Poetics as "pataka". Another early example of this is the One Thousand and One Nights (Arabian Nights), which consisted of a series of serialized stories, or "serialized novels" or novellas.