The difference between a hypothesis and a theory in scientific research lies in their levels of evidence and acceptance. A hypothesis is a specific, testable statement or prediction about a phenomenon, formulated based on preliminary observations or knowledge. It serves as a starting point for experimental investigation. In contrast, a theory is a well-substantiated explanation that has been repeatedly tested and confirmed through extensive experimentation and observation. Theories assimilate a body of evidence and provide a broader understanding of scientific phenomena. While hypotheses can contribute to theories, theories represent a higher level of scientific consensus.