Logo and Brand
A logo is a graphic mark or emblem commonly used by commercial enterprises, organizations and even individuals to aid and promote instant public recognition. Logos are either purely graphic (symbols/icons) or are composed of the name of the organization (a logotype or wordmark). A brand is a "Name, term, design, symbol, or any other feature that identifies one seller's good or service as distinct from those of other sellers.
A corporate design is the official graphical design of the logo and name of a company or institution used on letterheads, envelopes, forms, folders, brochures, etc. The house style is created in such a way that all the elements are arranged in a distinctive design and pattern. Corporations do have special design needs based on their behaviors. They communicate their mission, objectives, needs, and product information -- with users, clients, or members; with suppliers, distributors, service providers; with the surrounding community and the media; with financial institutions and other corporations, and with the state. They create, acquire, modify, organize and distribute large amounts of information and raw data, as well as goods and services. (Sometimes the goods or services are themselves information. For example, The Yellow Pages, or The New York Times.)