Marker drawings and illustrations are two very similar art forms. They both utilize markers as their primary medium and contain imaginative images that inspire and tell a story. However, marker drawings are often inspired by the artist's imagination. While an artist may use models for their piece's focus, the initial spark leading up to the work comes from the creator.
Marker illustrations are made to go along with a piece of text to visually express the idea that the writing conveys. These illustrations can be simple images that visually outline step-by-step instructions or colorful, detailed works visually depicting the scenery or an event from a novel.