Hi dear,In my opinion,
Inbound is a processing of the tour comp. We pick up the
touristsm from another place or destination to vosit our
country.

Outbound is a processing of the tour comp.We call people who
like to buy a packet tour of the company travel to another
place or destination.

I thing is true,something like that.If you have any idea,
you can tell someone who want to know.