Ключевые слова: abstract, alzheimer, background, blocks, brain, business, concept, confusion, creativity, dementia, depression, design, disease, education, face, head, health, human, icon, idea, illustration, imagination, intelligence, jigsaw, knowledge, letters, male, man, medical, medicine, memory, mental, mind, neurology, person, pile, problem, psychiatry, psychology, puzzle, science, sign, silhouette, solution, success, symbol, think, thought, wooden, work,