Science is the branch that deals with the natural world. An organized way of looking at things, observing them, recording the observations and confirming the same with experimental proof is called science.
Science also includes the cumulative knowledge of all the various works and the findings of all the scientists of all times. Whose experiments are proved by each other’s works and confirming the same with solid evidence.
On the other hand, all the data that are not supported by strong evidence or is not backed by experimental proofs is not science, and those who work on them cannot be called scientists.