Rock, Rock, Rock

Rock, rock, rock, tell me, what is it that we have in common?

You’re strong and sturdy, while I’m fragile and weak.

 You can be tossed and turned, while a simple fall would get me hurt.

If I fell right now down this canyon before us I would probably meet my end, while you would still stand with barely a scratch.

So, what is it then?

You may now think that there’s nothing in common between us, but I beg to differ.

We'll both disappear, in time.