Spelling Debockle?

Not the most glorifying post, but it tickled my interest in the slightest regards.

Aneurisms or Aneurysms

For some reason they are both acceptable and I've never really seen that before, nor realized why this is so... Doesn't make much sense to me.

Anyone have any idea why, or know any other words similar in fashion?

Edit:

Title changed...

Well, first of all, it's "debacle" not "debockle".

Second, I had no idea that there were two ways to spell "aneurysm".

Thirdly, I can't honestly recall any other words along that same vein. I'm sure if it wasn't almost 6am here, I'd be much more apt to think of one.

My only answer for "why" would be because the english language is pretty fucked up sometimes.

Too many exceptions... yep.

The house red.