Orsha vs Twin

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Orsha (Belarusian: О́рша, Во́рша, romanized: Orša, Vorša; Russian: О́рша [ˈorʂə]; Lithuanian: Orša, Polish: Orsza) is a city in Belarus in the Vitebsk Region, on the fork of the Dnieper and Arshytsa rivers.

Source: Wikipedia

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Twins are two offspring produced by the same pregnancy. Twins can be either monozygotic ('identical'), meaning that they develop from one zygote, which splits and forms two embryos, or dizygotic ('non-identical' or 'fraternal'), meaning that each twin develops from a separate egg and each egg is fertilized by its own sperm cell.

In contrast, a fetus that develops alone in the womb (the much more common case, in humans) is called a singleton, and the general term for one offspring of a multiple birth is a multiple. Unrelated look-alikes whose resemblance parallels that of twins are referred to as doppelgangers.

Source: Wikipedia