Ключевые слова: achievement, art, attract, background, beaker, blank, board, calculator, chalk, chalkboard, chemistry, classroom, color, colorful, contour, degree, diploma, education, exam, fire, flask, geometry, icon, illustration, isolated, laboratory, line, linear, magnet, mathematics, notification, office, outline, paper, pen, pencil, pop, popart, ring, ringing, school, set, test, transportation, vehicle, wooden,