Arch vs Bouin

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An arch is a vertical curved structure that spans an elevated space and may or may not support the weight above it, or in case of a horizontal arch like an arch dam, the hydrostatic pressure against it. Arches may be synonymous with vaults, but a vault may be distinguished as a continuous arch forming a roof.

Arches appeared as early as the 2nd millennium BC in Mesopotamian brick architecture, and their systematic use started with the ancient Romans, who were the first to apply the technique to a wide range of structures.

Source: Wikipedia

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B

ouin is the name or part of the name of the following communes in France: Bouin, Deux-Sèvres, in the Deux-Sèvres department Bouin, Vendée, in the Vendée department Bouin-Plumoison, in the Pas-de-Calais department Neuvy-Bouin, in the Deux-Sèvres department Villiers-au-Bouin, in the Indre-et-Loire departmentOther uses of the name Bouin: Bouin Solution, a type of fixative used in histology Jean Bouin, the French athlete and Olympian Stade Jean-Bouin, the sports stadium in Paris, France Jean-Bouin Stadium, Angers, the sports stadium in Angers, France

Source: Wikipedia