1. stash
He had a stash of money under the bed.
He didn’t want anyone else to see it and stashed it in his secret hiding place.
The stolen pictures were stashed in an abandoned house.
What do you need this stash for?
Where did you stash my black pants?
The money is stashed away in a bank account.
You'll find some useful gear stashed there
Under this system, a company maintains a stash of gold securely in a bank vault somewhere.
2. hideout
Have you told anyone where our hideout is?
<police found the stolen jewels under the floorboards in the thief's hideout, a cabin deep in the woods>