Ключевые слова: ache, adult, age, aged, background, caucasian, cheerful, elderly, emotion, emotional, expression, face, feeling, female, glasses, gray, green, grey, happy, headache, human, lady, lifestyle, male, man, mature, old, one, pensioner, person, portrait, retired, retirement, sad, senior, serious, smile, smiling, stress, tooth, toothache, unhappy, woman, worried,