Features of monopoly
Single seller: In a monopoly there is one seller of the good who produces all the output therefore, the whole market is being served by a single firm, and for practical purposes, the firm is the same as the industry.
Market power: Market power is the ability to affect the terms and conditions of exchange so that the price of the product is set by the firm (price is not imposed by the market as in perfect competition). Although a monopoly’s market power is high it is still limited by the demand side of the market. A monopoly faces a negatively sloped demand curve not a perfectly inelastic curve. Consequently, any price increase will result in the loss of some customers
Firm and industry: In a monopoly, market, a firm is itself an industry. Therefore, there is no distinction between a firm and an industry in such a market.
Price Discrimination: A monopolist can change the price and quality of the product. He sells more quantities charging less price against the product in a highly elastic market and sells less quantities charging high price in a less elastic market.