Ключевые слова: active, adult, age, aged, aging, alone, cane, care, city, crosswalk, disability, disabled, disease, elder, elderly, grandfather, handicap, health, illness, invalid, lifestyle, lonely, male, man, mature, old, older, oldness, one, outdoor, patience, patient, pensioner, person, retirement, sad, safety, senior, sidewalk, solitude, stick, street, support, urban, walk, walking, walking stick, weakness, wrinkled, wrinkles,