bicycle-built-for-two, tandem bicycle, tandem
['backpack, back pack, knapsack, packsack, rucksack, haversack', 'breakwater, groin, groyne, mole, bulwark, seawall, jetty', 'canoe', 'sunglass', 'pop bottle, soda bottle', 'sunglasses, dark glasses, shades', 'umbrella']