Theories, facts, and laws?

In Science a theory is an explanation of observed pheonomena. A Theory may be proven or unproven. A proven theory is essentially factual, and we consider a theory proven when all experimental evidence supports the theory and none of it disputes the theory. And before a theory comes to be accpeted as fact, it may go through various stages of increasingly rigorous proof that make it stronger and stronger - So one test does not prove a thoery (but one test can disprove a theory).

The theory of evolution is not weak or unproven becasue it is a theory. It is quite strong and proven by all available evidence. But as an explanation for the observed diversity of life and origin of species it is indeed a theory.

But in language we tend to define a theory as an 'unproven conjecture'. It is still an explanation but for some reason we consider it suspect or unproven when called a theory.

In science a law is a pretty much an unchanging prediction of outcome. It's a law when it always predicts the outcome and can written in an equation.

The laws of thermodynamics are always becasue they are always true in any scenario.

We have a theory of gravity - that mass warps space and the warped space results in an attractive force between objects.

We have a law of gravity: The force attraction is always proportional to the mass and distance of the 2 opjects.

And we have the fact of gravity observed and relied upon in our daily lives.