What is diffrerence between asteroidea and crinoidea?

Asteroidea, commonly known as sea stars or starfish, are echinoderms characterized by their star-like shape, typically having five or more arms radiating from a central disc. Crinoidea, or crinoids, include sea lilies and feather stars, which have a cup-shaped body and long, feathery arms used for filter feeding. While both belong to the echinoderm phylum, Asteroidea are primarily predators, while Crinoidea mainly feed on plankton and detritus. Additionally, crinoids are mostly sessile, attached to the substrate, whereas sea stars are generally mobile.