A real estate agent is a professional who has passed the required real estate classes and licensing exams in the state where he intends to work. This is the starting point for most real estate professionals, and the agent title is the most encompassing.A realtor is a real estate agent who is a member of the National Association of Realtors. Realtors must abide by the association’s standards and code of ethics. And a real estate broker has continued his education and obtained the broker license. Brokers can work independently or employ other agents. The biggest difference between the three titles is a broker can work on his own, while an agent must work under a licensed broker. A real estate associate broker is an agent that’s working on a broker’s license. An associate broker works under a licensed broker and can share in profits beyond the usual agent commission.