Gravitation is the attractive force between any two planets. Gravity is the force that pulls objects (within the Earth and its Atmosphere) toward the center of the Earth. Am I right?
Your quote: "All objects experience an acceleration toward all other objects" - In this, there is something wrong.
The correct one is that every object attracts another object in the universe. Cavendish's experiment mainly indicates the calculation of the gravitational constant.
My explanation for my question mentioned above shows a particular case. In general, gravity acts on each of the planets in the universe.