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n.
a natural event caused by something suddenly falling down or caving in; "the roof is in danger of collapse"; "the collapse of the old star under its own gravity"
n.
forceful prevention; putting down by power or authority; "the suppression of heresy"; "the quelling of the rebellion"; "the stifling of all dissent"
n.
an unpleasant or disastrous destiny; "everyone was aware of the approaching doom but was helpless to avoid it"; "that's unfortunate but it isn't the end of the world"