Self-employment is the state of working for oneself rather than an employer.
An independent contractor is a person, business, or corporation that provides goods or services under a written contract or a verbal agreement. Unlike employees, independent contractors do not work regularly for an employer but work as required, when they may be subject to law of agency.
An entrepreneur is a person who starts a new business and usually risks his own money to start the venture.
Small Business Owner
Small businesses are privately owned corporations, partnerships, or sole proprietorships that have fewer employees and/or less annual revenue than a regular-sized business or corporation.