Most Helpful Guy
1. A room providing a space out of which one or more other rooms or corridors lead, typically one near the entrance of a public building.
"they went into the hotel lobby"
an antechamber, hall, or lobby next to the outer door of a building.
synonyms: entrance hall, hall, hallway, entrance, porch, portico, foyer, reception area, lobby, anteroom, antechamber, outer room, waiting room
"we sat in a high vestibule between the street and the courtyard"
an antechamber, typically serving as a waiting room.
synonyms: antechamber, outer room, vestibule, lobby, waiting room, reception area;
a large room in an officers' mess, typically adjacent to the dining room.
;- I can't see much of a difference between 31