Wikipedia has this to say about Graphic Design:
“A graphic designer is a professional within the graphic design and graphic arts industry who assembles together images, typography or motion graphics to create a piece of design. A graphic designer creates the graphics primarily for published, printed or electronic media, such as brochures (sometimes) and advertising. They are also sometimes responsible for typesetting, illustration, user interfaces, web design, or may take a teaching position. A core responsibility of the designer’s job is to present information in a way that is both accessible and memorable”.
Graphics are needed for nearly all marketing purposes and are being created by designers all over the world for this reason.