How is Coulomb's law different than Newton's law of gravitation?

The electrostatic force can be either positive or negative according to Coulomb's Law, but it is always negative according to Newton's Law of Gravitation.

The sign of the force from Coulomb's Law depends on the signs of the two charges: like charges will return a positive force (repulsive), whereas opposite charges will return a negative force (attractive). In these contexts, a positive force indicates a force that is repulsive, and a negative force is attractive, so gravitational forces are always attractive.

Coulomb's law describes the electrostatic force between charged particles, while Newton's law of gravitation describes the gravitational force between masses. Coulomb's law depends on the product of the charges and decreases with the square of the distance between the charges, while Newton's law of gravitation depends on the product of the masses and also decreases with the square of the distance between the masses. Additionally, the electrostatic force can be attractive or repulsive depending on the signs of the charges, whereas gravity is always attractive.