A more thorough explanation:

Term: Deliver
Definition: To physically give an item, money, or paper to someone else.
Example: The mailman will deliver the package to your doorstep tomorrow.
Explanation: In this example, the mailman will physically bring the package to your house and hand it to you. This is an act of delivering the package. Example: The pizza delivery guy handed me the pizza and I paid him the money.
Explanation: In this example, the pizza delivery guy physically gave the pizza to the person who ordered it and received payment in return. This is an act of delivering the pizza and receiving payment. Example: The lawyer delivered the legal documents to the court clerk.
Explanation: In this example, the lawyer physically gave the legal documents to the court clerk. This is an act of delivering the legal documents.