Ключевые слова: adults, anonymity, anonymous, appearance, back to back, back view, blond, bond, brunette, casual clothing, coexistence, companionship, comparison, contrast, couple, curly hair, diversity, faceless, fashion, female, gender, gender differences, gender identity, hairstyle, human back, human relationship, individuality, isolation, long hair, male, man, mystery, partnership, people, photograph, profile view, rear view, relationship, side by side, simple, standing, standing still, style, together, tshirts, two people, unidentifiable, unity, woman, young,