Here are some examples of common lubricants:

* Oils: Motor oil, vegetable oil

* Greases: Lithium grease, silicone grease

* Water: Used in some industrial applications

* Synthetic fluids: Often used in high-performance applications

Lubricants work by creating a thin layer between surfaces that are in contact, reducing the friction between them. This allows the surfaces to move more easily and reduces wear and tear.