Fit out the stage for theater productions.
A Graphic Designer is a broad term that covers anybody who works in visual design. It is a title commonly associated with computer generated graphics, but it also technically refers to traditional print forms as well. You are a communications specialist, just one who speaks in pictures rather than words.
As a Graphic Designer you can do a lot of things. You might create logos for companies or design t-shirts. Perhaps you work at an advertising agency and put together commercials. In general, you work as an Artist and use images to convey a message that is accessible, memorable, and informative.
This means you can pursue a career that falls into the category of graphic design but is more narrow in scope. Art Directors, for example, are kind of like the managerial track Graphic Designers. Illustrators have more of a stylistic bent to their work, and Layout Artists use text and images in their design configurations.
Alternatively, you could practice under the title of Graphic Designer, and dabble in multiple areas. Here you can work either as a freelancer or an in-house Designer, but either way the greatest volume of work tends to be found in web design and corporate branding (creating logos, managing images and so forth).