* Noun: A reward is something given in return for good behavior, effort, or achievement.
* Example: She received a monetary reward for her hard work.
* Verb: To reward means to give someone something in return for good behavior, effort, or achievement.
* Example: The company rewarded its employees with a bonus.
Let me know if you have a specific sentence in mind, and I can tell you what part of speech "reward" is in that context.