You mean a mood-board; which is used to communicate a visual style. A lookbook is usually to give an overview of a single brand's season. It is used extensivel

You mean a mood-board; which is used to communicate a visual style. A lookbook is usually to give an overview of a single brand's season. It is used extensively in all visual creative industries, like interior decoration, architecture and of course fashion and photography. It's actually often one of the main deliverables early on in projects and thus also an important sales document (i.e. serious money is won or lost on the quality of the mood-board.)