[{"Bold_text": "noun", "List Items": ["any invertebrate animal, as a hydra, jellyfish, sea anemone, or coral, considered as belonging to the phylum Cnidaria ,characterized by the specialized stinging structures in the tentacles surrounding the mouth; a coelenterate."]}, {"Bold_text": "adjective", "List Items": ["belonging or pertaining to the Cnidaria ."]}]