Homonym: theory (Hypothesis)
A theory is a well-substantiated explanation of some aspect of the natural world, based on a body of evidence. It is developed through observation, experimentation, and reasoning, and aims to provide a coherent understanding of phenomena. Theories can be tested and refined over time as new data becomes available.
In science, a theory is different from a hypothesis, which is a preliminary idea that has yet to be tested. For example, the theory of evolution explains the diversity of life on Earth through processes like natural selection. Theories are essential for advancing knowledge and guiding research in various fields.