| Definition | Word or Phrase |
| Total revenue minus total cost | |
| Schumpeter's term to describe how competition from a new commodity, technology, source of supply or type of organization can eliminate existing firms | |
| An industry in which industry costs do not change with greater output, giving a horizontal long-run supply curve | |
| The ability to raise price above average cost without fear that other firms will enter the market | |
| A firm with market power -- or a market with one firm, selling a good with no close substitutes, with barriers to entry | |
| When a single firm can supply the entire market at a lower cost than two or more firms | |
| Selling the same product at different prices to different customers | |
| Buying low in one market and selling high in another market | |
| A group of suppliers that tries to act as if they were a monopoly | |
| Situation where the pursuit of individual interest leads to a group outcome that is in the interest of no one | |
| A good whose value to one consumer increases the more that other consumers use the good -- such as Sporcle | |
| In game theory -- a situation in which no player has an incentive to change their strategy unilaterally | |
| Tools of the mind -- knowledge and abilities that make people productive | |
| A difference in wages that offsets differences in working conditions | |
| If people who don't pay cannot be easily prevented from using the good, it is __________ | |
| If one person's use of the good does not reduce the ability of another person to use the same good, it is __________ | |
| Someone who enjoys the benefits of a public good without paying a share of the costs | |
| The tendency of any resource that is unowned and nonexcludable to be overused and undermaintained | |
| When the marginal benefits of being informed are less than the marginal costs | |