Monopolistic market is a kind of market in which there are more number of buyers and sellers sell more or less closely related goods.
Examples include different soaps whose function is more or less same in the same way toothpastes are considered. Each producer has a monopoly control over his own product but competition exists between them. Thus, we find a combination of monopoly and competitive elements.
Non price competition: this is nothing but the competition is not by price but by producing differentiated products.
Free entry and exit: There is freedom of entry in the sense that the new firms are free to produce close substitutes of any brand of product.
In perfect competition goods are similar where as in monopolistic competition they are not.
No money is spent for promotions in perfect competition whereas significant promotions are seen in monopolistic competition.
Large number of buyers and perfect mobility of factors of production is seen in both.