Ключевые слова: architecture, background, black, blackboard, board, brush, brushstroke, build, building, business, chalk, chalkboard, city, classroom, color, construction, drawing, education, engineering, growth, home, house, industrial, industry, knowladge, learn, learning, lesson, material, multicolor, overlapped, paint, paintbrush, renovation, school, site, structure, study, teach, technology, text, texture, town, urban, word, work, working, workplace, write,