Poster, Label, Text, Brochure, Paper, Flyer, Person, Human, Worker, alert, attention, background, banner, black, board, caution, construction, danger, design, dirty, equipment, grunge, icon, industrial, industry, isolated, maintenance, man, metal, progress, red, road, safety, scratched, security, sign, signs, site, stop, street, symbol, texture, traffic, triangle, under, vintage, warning, white, work, antique, repair, person, diaphragm, soil, image, decoration, upkeep, unclean, dirtiness, nether, judiciousness, advancement, mechanism, improvement, crimson, development, picture, emblem, dirt, worker, wisdom, building material, flag, know-how, adult, plank, care, building, readiness, soiled, signal, informing, sagacity, lumber, male, route