Riddle contest entry 1

This is a riddle I will be entering for a contest on this site. Please do not try to solve it till the contest is over.

If you have it, you can't share it.
If you share it, you haven't got it.
What is it?

Bonus Riddle: This riddle is for those that want to answer one while they wait. The first person to answer will have me review one thing of your choice that you wrote.

What ten letter word starts with G-A-S?

Author's Note

If you know the answer, please try to keep it under wraps till the contest is over.

Reviews

[originalazrael]

The Bonus answer is correct. The Main answer is incorrect.

[DeviousSiddy]

Heya,
thanks for your entries~ The other entries aren't valid enough for me so you basically already won. just thinking of which one of your entries to put as first. I will figure this out after I guessed/gave up on the riddles.

If you have thought of a work you wanted me to promote, please reply it to me and I will see it done :] You already won so no harm in that.

Now for my first guess:
Privacy

Bonus guess:
Automobile
Automobile