Which of the following is used for finding direction?

If a magnet X attracts another metal piece Y, then

Across
1. A magnetic material (6)
2. The ends of a magnet (5)
3. Magnetic rocks (9)
6. The property of magnets (9)
7. Leading stone (9)
Down
1. A device based on properties
of magnet (7)
4. The process of converting an
iron piece into a magnet (9)
5. Opposite poles show this property (10)