Ключевые слова: board, builder, builders, building, carpenter, carpentry, circle, construction, craft, craftsman, danger, development, equipment, hammer, hand, hit, home, house, human, hurt, improvement, industrial, industry, job, labor, lumber, machine, man, manual, metal, nail, occupation, old, profession, professional, roof, roofer, roofing, safety, steel, structure, timber, tool, tools, wood, wooden, woodwork, work, worker, workshop,