Entrepreneur
An entrepreneur is a person who has possession of a new enterprise, venture or idea and is accountable for the inherent risks and the outcome.
http://en.wikipedia.org/wiki/Entrepreneur

Entrepreneurial venture
A business idea that has evolved into a real business

Entrepreneurial opportunities
These are potential areas within the economy that with some resources, insight and effort could develop into a profitable business.

Venture capital
Venture capital (VC) is financial capital provided to early-stage, high-potential, growth startup companies.
http://en.wikipedia.org/wiki/Venture_capital