Ключевые слова: abstract, alarm clock, apple, art, background, banner, book, brain, briefcase, bulb, calculator, concept, design, document, flat, formula, glasses, globe, icon, idea, illustration, information, internet, knowledge, magnifier, medal, microscope, molecule, notebook, object, organization, owl, pencil, primer, process, protractor, school, school bell, school board, school bus, service, set, sign, social, square academic hat, symbol, target, technology,