Monopolists, also known as sole proprietors, can be distinguished by their exclusive control of a particular commodity or service. Other synonyms for monopolists include dominant companies, cartels, trusts, and oligopolies. Dominant companies refer to organizations that have a significant influence over the market due to their size and control over the supply chain. Cartels usually refer to a group of companies that coordinate prices and market share to maximize profits. Trusts refer to a set of companies that work together to manage production, pricing, and distribution in order to control the market. Oligopolies, on the other hand, refer to a few companies that have major control over a particular industry.