What is the difference between lunch and luncheon? Is it just American spelling vs British spelling, or do they have some sort of formal/professional touch to them, say, a casual midday meal with friends is called lunch while that with your colleagues/business clients is called luncheon?
closed as general reference by Hugo, onomatomaniak, kiamlaluno, JSBձոգչ, Jasper Loy Dec 7 '11 at 17:23
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