American television the episodes of a program first broadcast in a particular year constitute a season, while the entire run of the program—which may span several seasons—is called a series. In British television, on the other hand, the word series may apply to the episodes of a program in one particular year, for example, "The 1998 series of Grange Hill, as well as to the entire run. However, the entire run may occasionally be referred to as a "show". The term telecast, meaning television broadcast and uncommon even in the US, is not used in British English. A television program would be broadcast, aired or shown in both the UK and US. Telecommunications A long-distance call is a "trunk call" in British English, but is a "toll call" in American English, though neither term is well known among younger Americans. The distinction is a result of historical differences in the way local service was billed; the Bell System traditionally flat-rated local calls in all but a few markets, subsidising local service by charging higher rates, or tolls, for intercity calls, allowing local calls to appear to be free. British Telecom (and the British Post Office before it) charged for all calls, local and long distance, so labelling one class of call as "toll" would have been meaningless. Similarly, a toll-free number in America is a freephone number in the UK. The term "freefone" is a BT trademark. Rivers In British English, the name of a river is placed after the word (River Thames). In American English, the name is placed before the word (Hudson River). Style Use of that and which in restrictive and non-restrictive relative clauses Generally, a non-restrictive relative clause (also called non-defining or supplementary) is one containing information that is supplementary, i.e. does not change the meaning of the rest of the sentence, while a restrictive relative clause (also called defining or integrated) contains information essential to the meaning of the sentence, effectively limiting the modified noun phrase to a subset that is defined by the relative clause. An example of a restrictive clause is "The dog that bit the man was brown." An example of a non-restrictive clause is "The dog, which bit the man, was brown." In the former, "that bit the man" identifies which dog the statement is about. In the latter, "which bit the man" provides supplementary information about a known dog. A