Giving back:
* Give back: Implies a voluntary action of returning something.
* Restitution: Formal return of something that was stolen or taken unjustly.
* Repay: Return something borrowed or owed.
* Refund: Returning money for a purchase or service.
Coming back:
* Come back: General term for returning to a place or situation.
* Revisit: To return to a place or topic for further consideration.
* Recur: To happen again.
* Reoccur: To happen again, often after a period of time.
Result:
* Yield: The output or result of something.
* Produce: To create or generate something.
* Generate: To produce or create something, often in a way that is specific or complex.
Other:
* Reply: To respond to a question or request.
* Response: A reaction or answer to something.
* Feedback: Information about a performance or product.
The best synonym for "return" depends on the specific context of your sentence.