gnawer vs New World mouse

Other hyponyms of gnawer include mouse, rat, murine, water rat, muskrat, musquash, Ondatra zibethica, Florida water rat, Neofiber alleni, round-tailed muskrat, cotton rat, Sigmodon hispidus, wood-rat, wood rat, hamster, gerbil, gerbille, lemming, hedgehog, porcupine, jumping mouse, jerboa, dormouse, squirrel, prairie dog, prairie marmot, marmot, beaver, Aplodontia rufa, mountain beaver, sewellel, cavy, Dolichotis patagonum, mara, capibara, capybara, Hydrochoerus hydrochaeris, agouti, Dasyprocta aguti, Cuniculus paca, paca, mountain paca, coypu, Myocastor coypus, nutria, chinchilla, Chinchilla laniger, mountain chinchilla, mountain viscacha, chinchillon, Lagostomus maximus, viscacha, abrocome, chinchilla rat, rat chinchilla, mole rat, mole rat, sand rat.