The term you're referring to is "oligopoly," not "corporation oligopoly" or "monopoly corporation." An oligopoly is a market structure characterized by a small number of large firms that dominate the market. These firms have significant market power and can influence prices and output levels.
On the other hand, a monopoly is a market structure where there is only one firm that dominates the market, with no close substitutes for its product or service. The monopolist has complete control over the market and can set prices and output levels without competition.
In summary:
An oligopoly involves a few large firms.
A monopoly involves a single firm.
If you are asking whether a specific corporation is an oligopoly or a monopoly, you would need to look at the specific market and the number of significant competitors within it.
