Unlike perfect competition, where numerous small firms compete with identical products, imperfect competition is characterized by fewer firms, differentiated products and barriers to entry.

Two of the five 10.0s came from one competition on Friday ... The landing was visibly imperfect, but the judges declared otherwise. Both judges awarded Wong her first perfect ten of the season ...

Identifying the need for real competition for Richardson is one thing. Finding the right player in an offseason full of imperfect options is another thing entirely. “We'll bring who we think is ...

Bengal Chemists & Druggists Association warns of rising counterfeit drugs due to imperfect competition among retailers.