a large area typically with glass walls or roof in the middle of a building such a shopping center
"The hotel has a big glass atrium."
"The hotel's central atrium had a glass ceiling that let natural sunlight brighten all the surrounding rooms throughout the day."
foyer/ˈfɔɪɚ/noun
a large space at the entrance of a hotel or theater where people can wait or meet
"Please wait in the hotel foyer for me."
"The guests gathered in the foyer after entering the house and waited to be invited into the large living room."
mezzanine/ˈmɛzəˌnin/noun
a floor situated between two other floors of a building, which is smaller compared to the two
"Our seats were on the mezzanine level of the theater."
"A mezzanine is an intermediate floor between the main levels of a building"
vestibule/ˈvɛstɪbˌjuɫ/noun
a small entrance hall or lobby located just inside the main entrance of a building, serving as a transitional space between the exterior and the interior
"Leave your wet coat in the vestibule"
"We waited in the vestibule for a few minutes before entering the main hall of the theater."
Learn all 4 words in this list with spaced repetition