Friction is the resistive force which prohibits/opposes the movement of one object while rubbing on the surface of another object.
Gravity:
Gravity is the force of attraction applied on a body (no difference if the body is a living organism or an unanimated body) by the earth to pull it closer
similarities: They both are forces and so they have the same dimensions.
Answers & Comments
Answer:
differences:
Friction:
Friction is the resistive force which prohibits/opposes the movement of one object while rubbing on the surface of another object.
Gravity:
Gravity is the force of attraction applied on a body (no difference if the body is a living organism or an unanimated body) by the earth to pull it closer
similarities: They both are forces and so they have the same dimensions.