Asbestos encapsulation and abatement can sometimes be used interchangeability but they actually mean different processes for dealing with asbestos.
Asbestos encapsulation is a term used the asbestos is left in place but covered with a protective barrier to reduce the exposure. This is the most common way that people deal with asbestos and here is why:
Just like most process that do not eliminate the issue immediately, there is always a chance that you will have to deal with the asbestos at a later time.
A lot of people hear that asbestos should be removed instead of encapsulated for safety reasons but this is untrue when you are working with licensed professionals who remove all traces correctly.