The term real estate market refers to the abstract place where both the purchase and sale of property considered immovable occurs.
Real estate is by definition those embedded in the ground such as homes, buildings, land, which are impossible to move without causing a significant change in their structure.
They are traded on the real estate market, also defined with the terms of the "brick market" precisely because it is based on buildings, land and so on. Being quite large, often the purchase and sale operations on the real estate market require the presence of a broker, more commonly referred to as a real estate agent.
Real estate agencies, individuals, funds, developers, are all operators in the real estate market with different objectives ranging from sale, to purchase, to brokerage and so on.