Application (noun)

1. The action or process of applying something.
2. A form to be filled in to make a request or application for something, especially a job or membership of an organization.
3. Software program that is designed to perform a specific function.

Origin:

Late middle english: from latin applicatio(n-), from the verb applicare (see apply).

Examples:

1. The application of the new regulations.
2. He filled out an application for the job.
3. She submitted her application for the scholarship.
4. This is a mobile application for booking flights.
5. The application of the new technology has improved the process.