Friction.
Static friction is the type of friction that requires force to start an object moving across a surface. Once the object is in motion, kinetic friction takes over to oppose its motion.
Frictional force
oppose the motion of an object in contact with a surface. It is dependent on the nature of the surfaces in contact and the normal force pressing them together.
The force that always acts to oppose motion is called friction. Friction occurs between two surfaces in contact and creates resistance to the motion of one surface over the other.
Friction opposes the relative motion of surfaces in contact. It acts in the direction opposite to the direction of motion or tendency of motion between two surfaces.
Friction occurs when two surfaces come into contact and resist sliding against each other. It acts to oppose the motion of an object by creating a force in the opposite direction, slowing down or preventing the object from sliding or moving easily across the surface.
Relative motion
Friction.
Friction
Friction or Resistance
Frictional force acts to oppose the motion of an object in contact with a surface. It is caused by the interaction between the surfaces of the object and the surface it is sliding or resting on. This force can either help to prevent sliding (static friction) or resist the motion of sliding (kinetic friction).
Inertia is a property of matter that makes it harder to move, so that is probably what you are thinking of, but technically, forces do not oppose motion. Depending upon the direction in which a force is applied, one force can oppose another force that is acting in an opposite direction, but forces are not opposed to motion as such.