What's the difference between a dome canopy and a four-poster drape?

A dome (or 'princess') canopy hangs from a single ceiling point and drapes outward in a circle, requiring only one hook and working on beds without posts. A four-poster or four-corner drape attaches to the corners of a frame (or multiple ceiling points) and creates a rectangular enclosure. Reviewers note domes are easier to install on any bed, while four-corner drapes give a more tailored, symmetrical look.