| Perfect Competition | Monopolistic Competition |
| (i) Large number of sellers. | (i) Fairly large number of sellers. |
| (ii) The product is homogenous in nature. | (ii) The product is heterogeneous (differentiated) in nature. |
| (iii) The buyers have perfect knowledge about the product. | (iii) The buyers have some knowledge about the product. |
| (iv) There is no market power. | (iv) There is slight market power. |
| (v) The sellers are a price taker. | (v) The sellers are price maker. |
| (vi) Selling and advertisement costs do not exist. | (vi) Selling and advertisement costs exist. |
| (vii) Here, firms earn only normal profits in the long run. | (vii) Here, the firms earn supernormal profits in the long run. |