This world is used in commercial transaction with private means. Real estate is also for other sectors like construction, urbanization, architecture, etc. But if we talk about real estate and housing purchase, we also need to mention management, and advices. Promoting buildings in the respect of all market regulation has to be associated with civil rights and finance, which are key and essential for the market here.
The definition of real estate is a property consisting of land (or ground) and a house attached to it, which cannot move. Like for example an untapped land, a house for living, some office work, or a mix of these.
Related Topics on the french guide : Immobilier et logement, annonces immobilières