Duopoly

Oligopoly: An oligopoly is similar to a duopoly, but instead of just two firms, it involves a small number of dominant firms in an industry.

Monopoly: In contrast to a duopoly, a monopoly occurs when there is only one firm that controls the entire market without any competition.

Perfect Competition: Perfect competition is at the opposite end of the spectrum from a duopoly. It describes a market structure with many small firms that have no significant control over prices or competition.