A department of a hospital where seriously ill or injured patients, often with life-threatening conditions that require urgent or immediate treatment, are brought in, usually by ambulance.
A large medical facility, usually in a building with multiple floors, where seriously ill or injured patients are given extensive medical and/or surgical treatment.
A building founded for the long-term care of its residents, such as an almshouse. The residents may have no physical ailments, but simply need financial support.