Rethoric refers to the art of speaking or writing effectively.
Rhetoric refers to the employment of the figure of speech and other techniques through persuasive and effective writings. The use of the figure of speech helps the author to connect with the reader and vice-versa. Furthermore, it leads to a better comprehension and feeling of the story-line.
Rhetoric also makes reference to the study and uses of written, spoken and visual language.
Reading something is using your imagination, as to watching is processing your brain to focus on something. Reading uses your brain in a different process than watching,