Ключевые слова: 90, academic, adult, age, aging, board, casual, caucasian, citizen, classroom, college, education, elder, elderly, faculty, female, grandmother, gray, hair, happiness, happy, healthy, holding, indoors, knowledge, lady, learn, lecture, lecturing, old, older, one, pensioner, people, person, portrait, positive, profession, professional, professor, retired, retirement, school, senior, smile, smiling, stick, teacher, university, woman,