What is another word for duopoly?
Pronunciation: [djuːˈɒpəli] (IPA) 
Duopoly refers to a market situation where two companies or firms dominate the market and control the production and price of goods and services. There are several synonyms for this word, such as government-created monopoly, two-party system, oligopoly, binary, and twosome. A government-created monopoly is a situation where the government authorizes only one company to produce a particular product or service. Meanwhile, a two-party system refers to a political situation where only two parties dominate the political landscape. Oligopoly, on the other hand, describes a market where a few giant companies control the production and price of goods. Binary and twosome both refer to a situation where only two entities control the market.
