A nursing home, convalescent home, skilled nursing unit (SNU), care home, rest home, intermediate care provides a type of care of residents: it is a place of residence for people who require constant nursing care and have significant deficiencies with activities of daily living. Residents include the elderly and younger adults with physical or mental disabilities. Residents in a skilled nursing facility may also receive physical, occupational, and other rehabilitative therapies following an accident or illness. Services provided in nursing homes include services of nurses, nursing aides and assistants; physical, occupational and speech therapists; social workers and recreational assistants; and room and board. Nursing homes also provide transportation. Most care in nursing facilities is provided by CNAs (certified nursing assistants), not by skilled personnel. Nursing homes that participate in the Medicare and Medicaid programs are subject to federal requirements regarding staffing and quality of care for residents.