cliff, drop, drop-off
['marmot', 'eft', 'rapeseed', "yellow lady's slipper, yellow lady-slipper, Cypripedium calceolus, Cypripedium parviflorum", 'redshank, Tringa totanus', 'coil, spiral, volute, whorl, helix', 'letter opener, paper knife, paperknife']