Ключевые слова: abstract, atom, biology, black, business, central, centralised, chemical, chemistry, communication, compass, concept, connection, design, direction, element, global, glyph, graph, graphic, hierarchy, icon, illustration, information, internet, lab, laboratory, link, medical, medicine, molecular, molecule, navigation, net, network, object, pharmacy, physics, pictogram, reaction, research, science, share, sign, social, status, structure, symbol, technology,