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Stack: Retrieves the top element without removing it. Queue: Retrieves the front element without removing it.

Stack: Returns reference to the top element. Queue: Not applicable (Queue interfaces typically don't have a 'Top' operation).

Stack: Returns the number of elements currently in the stack. Queue: Returns the number of elements currently in the queue.

Stack: Adds an element to the top. Queue: Adds an element to the end.

Stack: Happens when trying to add an element to a full stack. Queue: Happens when trying to add to a full queue.

Stack: Occurs when trying to remove an element from an empty stack. Queue: Occurs when trying to dequeue from an empty queue.

Stack: Removes the element from the top. Queue: Removes the element from the front.