Can An entrepreneur be a business manager but a business manager cannot be an entrepreneur?

You can look at it as follows: An entrepreneur is an individual who, rather than working as an employee, runs a small business and assumes all the risk and reward of a given business venture, idea, or good or service offered for sale. The entrepreneur is commonly seen as a business leader and innovator of new ideas and business processes.

According to Wikipedia - An entrepreneur is a person who has possession over a company, enterprise, or venture, and assumes significant accountability for the inherent risks and the outcome.

Source: Answers.com Source: Wikipedia