Forms of expression such as novels, videos, and games were differentiated because of their differences in audience, form, and content. A novel is a literary work that focuses on stories. It usually uses the description of plots, characters, and scenes to convey the author's thoughts and emotions. Fictions tended to be more fictional and story-telling, so they could attract a wider audience. A novel could be written in text, e-books, paper books, radio, television, movies, and so on. Video is a form of media that focuses on images and sound. It is usually used to show stories, animations, games, or other content. The audience for videos is usually wider than novels and games because it can be watched on a wider range of devices, including televisions, computers, smart phones, and tablets. The video could be in the form of a movie, TV series, documentary, animation, advertisement, and so on. Games are a form of media that focuses on interaction and experience, usually used to provide entertainment and challenges. The audience for games is usually younger than novels and videos because games usually require more time and energy to play, and teenagers and young people are the main audience for games. The game could be in the form of electronic games, console games, tabletop games, and so on. Therefore, novels, videos, games, and other forms of expression were differentiated because of their differences in audience, form, and content. Different forms of presentation were suitable for different audiences and content types, so they needed to be chosen according to the specific situation.