Etymology
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Barbara 
fem. proper name, from Latin, fem. of barbarus "strange, foreign, barbarous," from Greek barbaros (see barbarian (n.)). For women, unlike men, the concept of "alien" presumably could be felt as "exotic" and thus make an appealing name. Popularized as a Christian name by the legend of Saint Barbara, early 4c. martyr, whose cult flourished from 7c. The common Middle English form was Barbary. A top 10 name in popularity for girls born in the U.S. between 1927 and 1958.
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Myanmar 

an old name for a part of Burma and a word for the country in native speech, officially chosen by the military rulers of Burma in 1989. Reasons given for the change include casting off a relic of colonialism, or downplaying the connection to the Burman ethnic majority.

It should be pointed out that this renaming has virtually no impact on Burmese citizens speaking in Burmese, who continue to refer to both Myanma as well as Bama (this not unlike formal reference in the English language to 'The Netherlands' while informally using 'Holland'). [Gustaaf Houtman, "Mental Culture in Burmese Crisis Politics," 1999]
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Saturday (n.)

seventh or last day of the week, Old English sæterdæg, sæternesdæg, literally "day of the planet Saturn," from Sæternes (genitive of Sætern; see Saturn) + Old English dæg (see day). Partial loan-translation of Latin Saturni dies "Saturn's day" (compare Dutch Zaterdag, Old Frisian Saterdi, Middle Low German Satersdach; Irish dia Sathuirn, Welsh dydd Sadwrn). The Latin word itself is a loan-translation of Greek kronou hēmera, literally "the day of Cronus."

German Samstag (Old High German sambaztag) appears to be from a Greek *sambaton, a nasalized colloquial form of sabbaton "sabbath" (see Sabbath), which also yielded Old Church Slavonic sabota, Polish sobota, Russian subbota, Hungarian szombat, French samedi.

Unlike other English day names there was no Germanic substitution, perhaps because the northern European pantheon lacks a match to Roman Saturn. A homely ancient Nordic custom seems to be preserved in Old Norse day names laugardagr, Danish lørdag, Swedish lördag "Saturday," literally "bath day" (Old Norse laug "bath").

Saturday night has been figurative of revelry and especially "drunkenness and  looseness in relations between the young men and young women" ["Clara Hopwood"] at least since 1847. Saturday-night special "cheap, low-caliber handgun" is American English, attested from 1976 (earlier Saturday-night pistol, 1929).

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