A logo (abbreviation of logotype, from Greek: λόγος logos «word» and τύπος typos «imprint») is a graphic mark, emblem, or symbol commonly used by commercial enterprises, organizations, and even individuals to aid and promote instant public recognition. There are purely graphic emblems, symbols, icons and logos, which are composed of the name of the organisation (a logotype or wordmark).
Since a logo is the visual entity signifying an organization, logo design is an important area of graphic design. A logo is the central element of a complex identification system that must be functionally extended to all communications of an organization. Therefore, the design of logos and their incorporation in a visual identity system is one of the most difficult and important areas of graphic design. Logos fall into three classifications (which can be combined). Ideographs are completely abstract forms; pictographs are iconic, representational designs; logotypes (or wordmarks) depict the name or company initials. Because logos are meant to represent companies’ brands or corporate identities and foster their immediate customer recognition, it is counterproductive to frequently redesign logos.