Salle d'attente or waiting room is a common term used in French. However, there are several other synonyms that can be used for the same purpose. One of them is "salle de reception" which means reception room. This term is mostly used in the context of formal or business settings. Another synonym is "vestibule" which is similar to a corridor or a hallway where people wait for their turn. In hospitals, "salle d'observation" or observation room is also used as a waiting area for patients and their families. "Zone d'attente" or waiting zone is another alternative that is quite common in public places like airports and train stations.
