The term 'hidden store' can be described by two crossword solutions: 'CACHE' and 'STASH'. A CACHE is a collection of items stored away and hidden, often for future use. It can also refer to a computer memory that stores frequently used data for quick access. A STASH is a secret or hidden store of goods or money, usually kept hidden from others. Both words are used to describe a place where something is hidden away for safekeeping.