Term: air bubble: a bubble of air
Broader: ball: an object with a spherical shape | Unrelated: blast furnace: a furnace for smelting of iron from iron oxide ores; combustion is intensified by a blast of air
Broader: ball: an object with a spherical shape | Unrelated: perboric acid: a form of boric acid
Broader: ball: an object with a spherical shape | Unrelated: criterion: the ideal in terms of which something can be judged
Broader: ball: an object with a spherical shape | Unrelated: ruff: (card games) the act of taking a trick with a trump when unable to follow suit
Broader: ball: an object with a spherical shape | Unrelated: carmelite order: a Roman Catholic mendicant order founded in the 12th century
Broader: ball: an object with a spherical shape | Unrelated: skull: the bony skeleton of the head of vertebrates
Broader: ball: an object with a spherical shape | Unrelated: zarf: an ornamental metal cup-shaped holder for a hot coffee cup
Broader: ball: an object with a spherical shape | Unrelated: thrombus: a blood clot formed within a blood vessel and remaining attached to its place of origin
Broader: ball: an object with a spherical shape | Unrelated: geomys: type genus of the Geomyidae
Broader: ball: an object with a spherical shape | Unrelated: stenopelmatus: sand crickets