Parts of a building

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Across
  1. 2. a set of steps built between two floors inside a building
  2. 4. A long narrow passage in a building, with doors that open into rooms on either side
  3. 7. a place where food and drink are served in a factory, a school, building, etc.
  4. 9. a way out of a public building or vehicle
  5. 10. a machine that carries people or goods up and down to different levels in a building
  6. 11. a door, gate, passage, etc. used for entering a room, building or place
Down
  1. 1. a room or rooms in a building, partly or completely below the level of the ground
  2. 3. a level of a building
  3. 5. The area inside the entrance of an office building, where guests or visitors go first when they arrive
  4. 6. A person whose job is to deal with people arriving at or phoning a hotel, an office building, a doctor’s surgery, etc.
  5. 8. a room, set of rooms or building where people work, usually sitting at desks