The difference between "principle" and "principal" lies in their meanings and usage. "Principle" refers to a fundamental truth, guideline, or belief that serves as the basis for behavior or decision-making. It often pertains to ethics or fundamental concepts in various fields such as science, law, or philosophy. On the other hand, "principal" primarily functions as a noun referring to a person who holds a leading position, especially in the context of a school where the term denotes the head of an educational institution or an amount of money lent or invested. While both words share the same origin, their spellings and meanings have diverged over time, resulting in different connotations and usages.
