How would I be able to tell the difference between a bar magnet and a similarly shaped soft iron bar?

Through observing the interaction between the two bars.

I originally thought the soft iron bar magnet would move towards the bar magnet, but that's not right. So can somebody please tell me how to do it?

Thanks in advance. 10 points for best answer!
Update: Wow thanks.. Why is this?
Update 2: Oh right, the bar magnet is stronger than the soft iron bar.
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