The distinction you propose is demonstrably not true in modern theories. (Where "modern" means a bit over 100 years old.) We call such things a law, but there i

The distinction you propose is demonstrably not true in modern theories. (Where "modern" means a bit over 100 years old.) We call such things a law, but there is no difference between a theory and a law. Such "laws" just predate our current philosophy of science, and we continue using names like "the Ideal Gas Law" because we always have. If someone came up with an equivalent thing now, we would not use the term "law" - which we can observe with physics from the 20th century.