Discuss gravitational force and strong nuclear force. describe at least two ways that they are alike and two ways that they are different.

 Gravitational force is the slight attraction of bodies caused by their masses. 

Strong nuclear force is the colossal force possessing protons together in an atomic nucleus. 
Alike: 

They are both attractive forces. 
They are both charge-independent 

Different: 

Vigorous nuclear force only applies to protons while gravity applies to all matter. 
Gravity occurs on all levels of space while the robust nuclear force only occurs at the sub-atomic level.