Although the words "reward" and "prize" are often used interchangeably, there are subtle differences between them. A "reward" is something given in return for good behavior, hard work, or an achievement. It's often something earned. On the other hand, a "prize" is something given to a winner in a competition or contest. It's something won.

Here are some example sentences to illustrate the difference:

• Reward: "My teacher rewarded me for my excellent work on the project." (Meaning: My teacher gave me something in return for my good work.)

• Reward Translation: My teacher gave me a reward for my excellent project work.

• Prize: "She won the first prize in the science fair." (Meaning: She received the prize because she won the competition.)

• Prize Translation: She got the top prize in the school science fair.

• Reward: "He received a bonus as a reward for his increased sales." (Meaning: The bonus was given to him because he increased sales.)

• Reward Translation: His reward for increased sales was a bonus.

• Prize: "The lottery winner received a large cash prize." (Meaning: The large sum of money was given as a result of winning the lottery.)

• Prize Translation: The lottery winner obtained a large sum of money as a prize.

Notice how "reward" implies a deserved payment for effort or accomplishment, while "prize" suggests winning a competition.

Sometimes, the words can be used almost interchangeably, but understanding the nuances helps in choosing the most appropriate word.

Happy learning!