What is the difference between room maintenance and maintenace of public areas?

Rooms Maintenance maintains the cleanliness and orderliness of a guestroom, hallways in guestroom areas, service station, linen room, while maintenance of public areas maintains the quality of service comma cleanliness and orderliness of public areas like lobby, corridors, function rooms (conference room comma social hall .), Offices, hallways, grounds and garden, reception area, and other areas accessible to the public.