[NapkinUser]

Gravity is law I think.

[js1138]

Gravity was a law before it became a theory.

[Mikey_1962]

Gravity is the theory of mass warping space-time.

[CLRGuy]

Gravity is law I think.

Actually gravity has laws and theories associated with it.
That two bodies in space attract each other is a proven fact, and forms the basis of the Law of Gravity.

The theory of gravity explores the why behind the law. Newton and Einstein both had different ideas about why Gravity exists, and we still don't know exactly why two bodies attract each other, although general relativity has given us some great mathematical abstractions to begin our search for a true explanation.

In our search for the truth about Evolution, I think it can be said that there is a "law of evolution" and a "theory of evolution". That biological systems evolve is generally accepted to be true, and we may even find some laws there. Why they evolve, and if that evolution is a part of a greater plan, that is in the realm of belief and theory. The two things are orthogonal to each other, however sometimes a belief or theory gives rise to the discovery of a law.

[muir_redwoods]

Remember, Newton's Laws of motion got corrected by Einstein's Theory of Relativity