What’s the difference between: decontamination, disinfection and sterilization?

What is disinfection? Definition:

Decontamination Microbial removal: An operation designed to eliminate or reduce the number of microbes on living tissue and inert objects to levels considered safe.

Disinfection : Operation with a momentary result that eliminates or kills micro-organisms and inactivates undesirable viruses.

Sterilization Sterilization: Sterilization is an operation that completely eliminates or kills all microorganisms.