What is the relationship between superstition and traditional culture?

Simply put, in modern and contemporary society, everything that goes against science and can't be explained by science can be said to be superstition, but many traditions have been handed down as folk customs because people have become accustomed to it and science can't completely give a negative explanation. Some positive folk customs with local characteristics can be said to be traditional culture and protected by laws such as cultural heritage. On the contrary, something unhealthy, harmful to the public and contrary to scientific attempts can be defined as superstition.