Answer:venture - An undertaking involving uncertainty as to the outcome, especially a risky or dangerous one.entrepreneur - An entrepreneur is someone who starts or owns a business. Whether it's in farming, retail, manufacturing or in the service sector, entrepreneurs are businesspeople who find their success by taking risks.economy - The process or system by which goods and services are produced, sold, and bought in a country or region.substitute - A substitute refers to a product or service that consumers see as essentially the same or similar-enough to another product.