Etymology
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Deneb 

bright star in the tail of the constellation Cygnus the Swan, by 1741, from Arabic Al Dhanab al Dajajah "the Hen's Tail."

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Denebola 
second-brightest star in Leo, from Latinized corruption of Arabic dhanab al-(asad) "tail of the lion." In 18c., often simply Deneb.
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