Here is a list of nouns that start with OV.
oval, ovation, oven, overall, overcast
overcoat, overcrowding, overestimation, overexploitation, overflow
overhang, overhaul, overhauling, overhead, overheating
overlay, overload, overnight, overpayment, overpopulation
overpressure, overprotection, overriding, overrun, overseer
oversight, oversimplification, overthrow, overtime, overture
overweight
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