arthropods vs. annelids

this could be a long bitchy story, but it's not gonna be. suffice it to say that worms belong to the phylum of annelids, and centipedes and caterpillars belong to the phylum of arthropods. the arthropod phylum contains insects, arachnids and crustaceans... it is the largest phylum of animals, and none of them are "worms"...