Ключевые слова: architect, background, build, builder, cap, caution, construction, contractor, danger, design, draw, drawing, engineer, engineering, equipment, flat, graphic, hand drawn, hard, hat, head, headgear, helmet, icon, illustration, industrial, isolated, line, linear, manufacture, miner, occupation, outline, protect, protection, protective, red, safe, safety, sign, site, symbol, technician, tool, uniform, wear, white, work, worker,