Why is sin-stained demon an example of a kenning?

"Sin-stained demon" is an example of a kenning because it is a figurative expression that uses two descriptive Words to convey a more complex idea. In this case, "sin-stained" serves as a metaphorical descriptor for the demon, emphasizing its malevolence and moral corruption. Kennings are often used in Old English and Norse poetry to create vivid imagery and add depth to the text, allowing readers to visualize concepts through evocative language.