Twin vs Touba

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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

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Touba (Hassaniya Arabic: Ṭūbā, 'Felicity'; Wolof: Tuubaa) is a city in central Senegal, part of Diourbel Region and Mbacké district. With a population of 529,176 in 2010, it is the second most populated Senegalese city after Dakar.

It is the holy city of Mouridism and the burial place of its founder, Shaikh Ahmadou Bàmba Mbàcke. Next to his tomb stands a large mosque, completed in 1963.

Source: Wikipedia