Oil and Lube
Oil. Those three letters in that same order can easily perk up the ears of just about anyone right now as it has become such a valuable commodity in the 21st century. However, this view of oil is mainly on the perspective of it being used to fuel our 24-7 lifestyles and businesses. But oil is not simply used for fuel. Another feature that oil has is its ability to lubricate.
By lubricate we mean that oil when applied can cause a decrease in the amount of friction occurring between two or more surfaces. If you slide a piece of metal against another, you would probably grind your teeth because of the painful, grating sound that these two pieces of metal would produce. If you use oil to lubricate them however, chances are the grating sound would not be as harsh and as loud as when there was no oil lubrication. You would also have an easier time dragging that one piece of metal across the lubricated surface than when you pushed it through the metal with no oil. And finally, you may notice that a piece of metal rubbed against another would have more corroded or eroded parts than that which used oil lubrication.
And so clearly, oil lubrications can be quite useful if you apply it to something more useful than just rubbing two pieces of metal together. Car engines are sure to function better if they are well oiled, as well as door hinges, bicycle chains, and factory machineries that are lubricated using different oil types.
Because of this, many oil-based lubes or lubricants have been made for different purposes. Examples would be motor oil for engines or cooking oil for baking and cooking.

