launching an application - reading comprehension

[shaharhada]

"OS kernel performs three primary jobs:
1 - It provides the interfaces needed for users and applications to interact with the computer.
2 - It launches and manages applications.
3 - It manages the underlying system hardware devices."

(From: https://www.techtarget.com/searchdatacenter/definition/kernel)

What is the meaning of the phrase to launch an application?
What is the meaning of managing and launching an application?

I try to use dictionary, but I was stuck to under the text

 

[USAFRet]

"launching" = "starting".

Manages = controls the flow of data to and from the application.

 

[shaharhada]

"launching" = "starting".

Manages = controls the flow of data to and from the application.

O.K. Thanks.
The problem was with the meaning of the word: launching.
Thank you.