Term: aeration: the process of exposing to air (so as to purify)
Broader: natural process: a process existing in or produced by nature (rather than by the intent of human beings) | Unrelated: timothy: grass with long cylindrical spikes grown in northern United States and Europe for hay
Broader: natural process: a process existing in or produced by nature (rather than by the intent of human beings) | Unrelated: odist: a poet who writes odes
Broader: natural process: a process existing in or produced by nature (rather than by the intent of human beings) | Unrelated: motor vehicle: a self-propelled wheeled vehicle that does not run on rails
Broader: natural process: a process existing in or produced by nature (rather than by the intent of human beings) | Unrelated: yellow-dog contract: a labor contract (now illegal) whereby the employee agrees not to join a trade union
Broader: natural process: a process existing in or produced by nature (rather than by the intent of human beings) | Unrelated: bay willow: European willow tree with shining leathery leaves; widely naturalized in the eastern United States
Broader: natural process: a process existing in or produced by nature (rather than by the intent of human beings) | Unrelated: common denominator: an attribute that is common to all members of a category
Broader: natural process: a process existing in or produced by nature (rather than by the intent of human beings) | Unrelated: fiddler crab: burrowing crab of American coastal regions having one claw much enlarged in the male
Broader: natural process: a process existing in or produced by nature (rather than by the intent of human beings) | Unrelated: sycamore: Eurasian maple tree with pale grey bark that peels in flakes like that of a sycamore tree; leaves with five ovate lobes yellow in autumn
Broader: natural process: a process existing in or produced by nature (rather than by the intent of human beings) | Unrelated: control stock: shares owned by shareholders who have a controlling interest
Broader: natural process: a process existing in or produced by nature (rather than by the intent of human beings) | Unrelated: weather bureau: an administrative unit responsible for gathering and interpreting meteorological data for weather study and forecasts