Superstition is the belief in supernaturalcausality—that one event causes another without any natural process linking the two events—such as astrology and certain aspects linked to religion, like omens, witchcraft, and prophecies, that contradict natural science.
The word superstition is generally used to refer to the religion not practiced by the majority of a given society – such as Christianity in Western culture – regardless of whether the prevailing religion contains superstitions. It is also commonly applied to beliefs and practices surrounding luck, prophecy, and certain spiritual beings, particularly the belief that future events can be foretold by specific (apparently) unrelated prior evenorg
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SOURCE : www.Wikipedia.org