In literary criticism, purple prose is a passage or sometimes an entire literary work, written in prose so overly extravagant, ornate, or flowery as to break the flow and draw attention to itself. Purple prose is sensuously evocative beyond the requirements of its context. It also refers to writing that employs certain rhetorical effects such as exaggerated sentiment or pathos in an attempt to manipulate a reader's response.
Description is one of four rhetorical modes (also known as modes of discourse), along with exposition, argumentation, and narration. Each of the rhetorical modes is present in a variety of forms and each has its own purpose and conventions.