The term 'Stock Market' is commonly used to encompass both the physical location for buying and selling stocks as well as the overall activity of the market within a certain country. When we hear an expression such as 'The stock market was down today' it refers to the combined activity of many stock exchanges i.e. the New York Stock Exchange (NYSE), Nasdaq and so on in the United States .
The 'Stock Exchange' is the correct term for the physical location for trading stocks. Each country may have many different stock exchanges and usually a particular company's stocks are traded on only one exchange, although large corporations may be listed in several different locations.
Stock exchanges exist throughout the world and it is possible to buy or sell stocks on any of them. The only restriction is the opening hours of each exchange. Both the NYSE and Nasdaq for example operate from 9:30 a.m. to 4:00 p.m. Eastern Time from Monday to Friday. Other exchanges have similar opening hours based on their local time. If you want to trade on the Hong Kong Stock Exchange your order will be executed sometime between 9:30 p.m. and 4:00 a.m. New York time.
The major stock exchanges of the world are located in Japan (Tokyo Stock Exchange), India (Bombay Stock Exchange), Europe (London Stock Exchange, Frankfurt Stock Exchange, SWX Swiss Exchange), the People's Republic of China (Shanghai Stock Exchange) and the United States . The major exchanges in the US are the NYSE, Nasdaq, and Amex.
Stock markets closely follow the economic health of a country. When the economy is doing well the market is bullish. Bull markets occur during times of high economic production, low unemployment and low inflation. Bear markets, on the other hand, follow downtrends in the economy. Inflation and unemployment are rising and stock prices are falling.
Fluctuations in stock prices are also driven by supply and demand, which in turn are determined to a large extent on investor psychology. Seeing a stock rise in price may cause investors to jump on the bandwagon and this rush to buy drives the price even faster. A falling price can have the same effect. These are short term fluctuations. Stock prices tend to normalize after such runs.
The stock exchange is only one of many opportunities to invest. Other popular markets include the Foreign Exchange Market (FOREX), the Futures Market, and the Options Market.