Ключевые слова: app, background, business, circle, clock, clockwork, cog, cogwheel, communication, concept, cooperation, design, engine, engineering, factory, flat, gear, icon, illustration, industrial, industry, internet, isolated, machine, machinery, mechanical, mechanism, modern, part, preferences, setting, sign, silhouette, simple, spin, symbol, technical, technology, transmission, web, website, wheel, work,