The graphic novel genre is not a new one. The term was coined in the 1980s, when a number of comic strips were amalgamated into a single volume. Since then, graphic novels have evolved, and are considered to be a genre on their own with sophisticated illustrations, as well as longer and complex storylines with a beginning and an end, much like regular
novels. Still, there are many experts who dismiss graphic novels as mere longer versions of comic books.

Whatever the case, the rise of the graphic novel cannot be disputed. Their sales figures are substantial enough to have led to the increase of publishing houses that are dedicated solely towards their publication. And the trend of converting regular novels into graphic ones is now picking up; a case in point are the graphic novels of the Twilight series which are slated for release later this year.
— MMA