What are the four kinds of friction and there definitions?

What is the difference between drift current and diffusion current? Why do ice cubes pop when they are put in water? What is distliation? The term used to describe the study of motion? Why was the thrust ssc invented? Which two components produce the highest heat in a system? How capacitor opposes the change in current? Overall charge in a atom? Why balloon kept in sun burst after some time? How do you find centre of gravity of regular shape by experimentation? Is the thermal energy an example of the solar energy? Why does hot tap water not boiling when you pour it in a cup? When light passes at an angle to the normal from one material to another material in which its speed is higher what happens? Can an inanimate object be used to possess something? What type friction exsists between two surfaces that are not moving past each other? How is a sonar and a echo different? What happens to capacitance if voltage is increased? How do you convert 8 oz to grams? How does force affect projectile? How is sound digitised?

What are the four kinds of friction and there definitions?