The term 'kind of worm' can refer to four different types of worms: inchworms, silkworms, glowworms, and tapeworms. Inchworms are small caterpillars that measure their movements in inches, hence their name. Silkworms are the larvae of moths that produce SILK, a material used for clothing and other textiles. Glowworms are small larvae that emit light, usually found in caves or damp areas. Tapeworms are parasites that live in the intestines of animals, including humans.