Within a type of communication, the writer, speaker, or designer chooses a form based on the purpose of the piece. Common written forms include narrative, journal, procedural, expository, explanatory, news article, e-mail, blog, advertisements, poetry, novel, and letter.
literary or thematic categories (e.g., adventure, fable, fairy tale, fantasy, folklore, historical, horror, legend, mystery, mythology, picture book, science fiction, biography, essay, journalism, manual, memoir, personal narrative, speech)