1. monopoly
market structure with a few sellers who produce either identical or differentiated products (such as cars and steel)
2. perfect competition
market structure with a single seller who produces a product with no close substitutes ("price makers")
3. oligopoly
market structure with many sellers who produce identical products ("price takers")
4. monopolistic competition
market structure with many sellers who produce differentiated products (such as food, hairdressers, and movie theaters)

match the words and definitions