| A | B |
| Predatory Pricing | selling a product below cost for a short period of time |
| Antitrust Laws | laws that encourage competition in the marketplace |
| Trust | an illegal grouping of companies that discourages competition, similar to a cartel |
| Merger | when two or more companies join to form a single firm |
| Deregulation | the removal of some government controls over a market |
| Monopoly | a market structure in which a single seller dominates |
| Natural Monopoly | a market structure that runs most efficiently when one large firm supplies all of the output |
| Government Monopoly | a monopoly created by the government |
| Oligopoly | a market structure in which a few large firms dominate a market |
| Perfect Competition | a market structure in which a large number of firms all produce the same product and no single seller controls supply or prices |