Perfect Competition: Many buyers and sellers, homogeneous products, free entry/exit, price takers (theoretical ideal).

Monopoly: Single seller, unique product, high barriers to entry, price maker (e.g., Indian Railways in passenger transport historically).

Oligopoly: Few large sellers, interdependent decision-making, high barriers to entry, can have homogeneous or differentiated products (e.g., Indian telecom, aviation sector).

Monopolistic Competition: Many sellers, differentiated products, relatively free entry/exit (e.g., restaurants, clothing).

Market Share: The percentage of total sales in a market held by a particular company, indicating its relative size.

Market Dominance: When a single firm holds a significant market share, potentially influencing market prices and output, which can be subject to scrutiny by competition authorities.

Competition Policy: Government policies designed to promote fair competition, prevent anti-competitive practices (e.g., cartels, abuse of dominant position), and protect consumer welfare.

Consolidation: Mergers and acquisitions leading to a reduction in the number of firms and an increase in market concentration.

Barriers to Entry: Factors that prevent or deter new firms from entering a market, such as high capital costs, regulatory hurdles, or strong brand loyalty.

Perfect Competition: Many buyers and sellers, homogeneous products, free entry/exit, price takers (theoretical ideal).

Monopoly: Single seller, unique product, high barriers to entry, price maker (e.g., Indian Railways in passenger transport historically).

Oligopoly: Few large sellers, interdependent decision-making, high barriers to entry, can have homogeneous or differentiated products (e.g., Indian telecom, aviation sector).

Monopolistic Competition: Many sellers, differentiated products, relatively free entry/exit (e.g., restaurants, clothing).

Market Share: The percentage of total sales in a market held by a particular company, indicating its relative size.

Market Dominance: When a single firm holds a significant market share, potentially influencing market prices and output, which can be subject to scrutiny by competition authorities.

Competition Policy: Government policies designed to promote fair competition, prevent anti-competitive practices (e.g., cartels, abuse of dominant position), and protect consumer welfare.

Consolidation: Mergers and acquisitions leading to a reduction in the number of firms and an increase in market concentration.

Barriers to Entry: Factors that prevent or deter new firms from entering a market, such as high capital costs, regulatory hurdles, or strong brand loyalty.