Examlex
Debit card balances are part of money supply M1, but credit card balances are not.
Monopolistic Competition
A market structure in which many firms sell products that are similar but not identical, allowing for some degree of market power.
Oligopoly
A market structure characterized by a small number of firms that have significant control over market prices and competition levels.
Barriers To Entry
Obstacles or hindrances that make it difficult for new competitors to enter a market or industry.
Herfindahl Index
A measure of market concentration that squares the market share of each firm competing in the market and sums the resulting numbers.
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