Dear student,
The acceleration due to gravity is the acceleration with which a freely falling body get accelerated towards the earth's surface.
The S.I unit of acceleration due to gravity is m/s2
It is denoted by g and has a constant value of 9.8m/s 2 on earth.
The gravitational force is a force that attracts any two objects with mass.
It's S.I unit is Newton.
It is dependent on the mass of two bodies and distance between them.
Regards