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MARKET SHARE: The fraction of an industry's total sales accounted for by a single business. In general, market share is a "first-guess" indicator of a firm's market control. If, for example, a company has a market share of 100 percent (that is, a monopoly), then you can rest assured it has a substantial amount of market control. A company with a 25 percent market share has less, but still notable, market control. In fact, when you get right down to the bottom line, the phrase "market share" is only worth mentioning for oligopolistic firms with a significant degree of market control. There really is no market control for a monopolistically competitive firm with a 0.00000001 percent market share.

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INSURANCE

A service that transfers the risk of loss from an individual to a larger group. The larger group is typically represented by an insurance provider, either a private for-profit company or a government agency. The insurance provider can assume the risk through risk pooling. Risk averse people, who are willing to pay a premium to avoid risk, are the ones most inclined to purchase insurance. The risk averse individual agrees to incur a small guaranteed loss (the premium) but avoids incurring a less likely, but much bigger, loss.

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Today, you are likely to spend a great deal of time browsing about a thrift store trying to buy either a solid oak entertainment center or a remote controlled ceiling fan. Be on the lookout for crowded shopping malls.
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Al Capone's business card said he was a used furniture dealer.
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