Superstition is the belief in supernatural causality—that one event causes another without any natural process linking the two events—such as astrology, religion, omens, witchcraft, prophecies, etc., that contradicts natural science.
Some beliefs and practices, which are considered superstitious by some, may not be considered so by others.
The gap, between what is superstitious and what is not, widens even more when considering the opinions of the general public and scientists.
This app notes beliefs or practices in India, which have been deemed of being superstitions or pseudosciences, though opinions may vary on some issues.