Strong nuclear force: Unlike gravity and electromagnetism, the strong nuclear force is a short distance force that takes place between fundamental particles within a nucleus. It is charge independent and acts equally between a proton and a proton, a neutron and a neutron, and a proton and a neutron.
Strong nuclear force: Similar to other fundamental forces (gravity and electromagnetism), the strong nuclear force is a short-range interaction that occurs between subatomic particles within an atomic nucleus. It does not depend on charge and affects all types of nucleons equally.