Accepted Answer
A theory may be a set of statements that are developed through a method of continued abstractions. A theory is aimed toward a generalized statement aimed toward explaining a development. A model, on the opposite hand, maybe a purposeful illustration of reality. As you'll be able to see, each shares common parts in their definitions.
Suggested Answer
these two things are related but can be independent, because it is possible to... of theories is studied formally in mathematical logic, especially in model theory.