- anteroom, antechamber, entrance hall, hall, foyer, lobby, vestibule - a large entrance or reception room or area
--1 is a kind of room
--1 is a part of building, edifice
--1 has particulars: narthex - vestibule - any of various bodily cavities leading to another cavity (as of the ear or vagina)
--2 is a kind of cavity, bodily cavity, cavum
--2 has particulars: vestibule of the ear; vestibule of the vagina