brain coral
['fig', 'platypus, duckbill, duckbilled platypus, duck-billed platypus, Ornithorhynchus anatinus', 'zucchini, courgette', 'chain mail, ring mail, mail, chain armor, chain armour, ring armor, ring armour', 'acorn', 'sturgeon', 'breakwater, groin, groyne, mole, bulwark, seawall, jetty']