Ключевые слова: architecture, barrier, cap, cheerful, come, cone, construction, cute, danger, engineer, estate, forbidden, hardhat, hat, hello, helmet, help, light, manual, occupation, page, people, planning, puppet, repairing, return, road, safety, security, sign, site, solution, stop, street, striped, symbol, tool, traffic, under, waiting, warning, web, white, work, worker, www,