Final answer:
One function returns a value to the user, while the other does not.
Step-by-step explanation:
In the given code snippet, one function returns a value to the user, while the other does not. The function SetActive() does not return a value. It is used to deactivate the game object represented by other.gameObject. On the other hand, the function SetCountText() does not return a value either. It is called to update the text that displays the count of pickups in the game.