application
US /ˌæp.ləˈkeɪ.ʃən/
UK /ˌæp.ləˈkeɪ.ʃən/

1.
a formal request to an authority for something
:
•
I submitted my application for the new job.
•
The deadline for applications is next Friday.
2.
the action of putting something into operation or use
:
•
The practical application of this theory is limited.
•
The new software has many useful applications.