worm: any of numerous relatively small elongated soft-bodied animals especially of the phyla Annelida and Chaetognatha and Nematoda and Nemertea and Platyhelminthes; also many insect larvae
invertebrate: any animal lacking a backbone or notochord; the term is not used as a scientific classification
winged pigweed: bushy annual weed of central North America having greenish flowers and winged seeds