Write the advantages and disadvantages of friction. Write the remedies to reduce friction.

(N/A) Friction is like fire; sometimes it is desirable and necessary,and sometimes it is undesirable.
Advantages of Friction:
$(1)$ It allows us to walk on the ground without slipping.
$(2)$ It enables us to hold objects firmly.
$(3)$ It allows us to write on surfaces like paper or boards.
$(4)$ It helps in transmitting motion between wheels via conveyor belts.
Disadvantages of Friction:
$(1)$ It opposes relative motion and dissipates mechanical energy in the form of heat.
$(2)$ It causes wear and tear in the moving parts of machines.
$(3)$ It leads to the wearing out of clothes,shoes,and vehicle tires.
Remedies to Reduce Friction:
$(1)$ Lubricants: Using oils or greases between moving parts reduces kinetic friction.
$(2)$ Ball-bearings: Using ball-bearings between moving parts converts sliding friction into rolling friction,which is significantly lower.
$(3)$ Air Cushion: Maintaining a thin cushion of air between solid surfaces can effectively reduce friction,as illustrated in the figure.