Ключевые слова: backdrop, background, brain, brainstorm, brown, business, coach, cogs, concept, cooperation, course, dark, development, drawn, e learning, education, finance, gear, glow, grunge, hand, head, icon, idea, information, knowledge, leader, learn, mind, old, online, partner, room, scratch, space, storm, stroke, study, symbol, teamwork, technology, texture, think, trainer, training, vintage, wheel, wood, work,