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POPSWhy we curse-What the @#$%? In English-speaking countries today, religious swearing barely raises an eyebrow. Gone with the wind are the days when people could be titillated by a character in a movie saying "Frankly, my dear, I don't give a damn."... IN DEPTH ANALYSIS AT http://www.tnr.com/docprint.mhtml?i=20071008&s=pinker100807
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POPSRare words 'mutate' faster than common ones. I suppose if people don't use a word it is forgotten, or badly remembered. There was a great shift in language in Britain after the Black Plague. Labor became expensive and people who once were 'common folk' acquired money, land, and assumed positions of power. French that was spoken in the royal court, and was considered the 'official' language. This gave us many words describing end products, like beef, veal, and bacon, while words like calf,cow,and pig, which were in common use and concerned things that involved everyday farmers, and workers, The two dialects combining were a significant element in the evolution of the English language, because of the way it changed the frequency of word use.