| S. No. | Stack | Queue |
|---|---|---|
| 1. | A stack is LIFO type of list. | A queue is FIFO type of list. |
| 2. | Only top element of stack is visible. | Only front and rear elements are visible. |
| 3. | In a stack insertion and deletions are possible only at one end. | In a queue insertion is done at one end and deletion is done at other end. |
| 4. | Only one item can be added at a time. | Only one item can be added at a time. |