What is the difference between background in process or progress?

[Ldp]

What is the difference between background in process or in progress?

 

[Wakki]

Background Check status messages.........

1) “Your application is in progress. We will send you a message when we start your background check.”
.........Background Check may not have been started.

2) “We are processing your background check. we will send you a message if we need more information.“
........Background Check has been started.

3) "Your background check was completed."
........Background Check message after PR visa is issued.