I think you got that wrong.
Provable or proven does not necessarily mean correct. See flat earth is a theory because you can in some ways make your proves that the earth is flat. The proves are all bullshit because the theory is wrong.
Hypothethis = scientific thought/reason based on a seen pattern
Theory = hypothethis that has been proven in some way.
Also Isaac Newton's theory is a theory becaues it was proven. He made forecasts based on his equations that actually happened = prove.
And I'm pretty sure that Newton's theory was only wrong in the speed of gravitational force which he said was instantanious and einstein prove that it was at the speed of light.
Einsteins gravitational theory isn't really changing newton's equation's it's just giving the reason for why gravitation exists, which is the bending and curving of spacetime.
I mean we're obviously just discussing the exact definitions, but I've learned that the scientific hierarchy is:
Individual Observation -> Pattern -> Hypothethis -prove-by-not-being-able-to-flasificate-> Theory
Maybe I got this wrong, but in the end we mean the same.