tank, army tank, armored combat vehicle, armoured combat vehicle
['backpack, back pack, knapsack, packsack, rucksack, haversack', 'freight car', 'knee pad', 'sidewinder, horned rattlesnake, Crotalus cerastes', 'ice bear, polar bear, Ursus Maritimus, Thalarctos maritimus', 'bustard', 'racer, race car, racing car']