Ключевые слова: abstract, afraid, anxiety, anxious, apprehensive, background, brave, bravery, business, challenge, city, concept, courage, danger, dark, darkness, death, discovery, emotion, enigmatic, fear, horrified, horror, human, letter, mystery, nervous, opportunity, people, perspective, phobia, problem, problems, psychology, scared, scary, shock, solitude, standing, street, stress, terrified, underground, urban, worry, young,