noun

a stock or store of money or valued objects, typically one that is secret or carefully guarded.

he came back to rescue his little hoard of gold

cache,stockpile,stock,store,collection,supply,reserve,reservoir,fund,accumulation,heap,pile,mass,aggregation,conglomeration,treasure house,treasure trove,stash,amassment

verb

accumulate (money or valued objects) and hide or store away.

thousands of antiques hoarded by a compulsive collector

store,store up,stock up on,stockpile,put aside,put by,put away,lay by,lay in,lay up,set aside,stow away,buy up,cache,amass,heap up,pile up,stack up,collect,save,gather,garner,accumulate,husband,squirrel away,put to one side,put away for a rainy day,stash away,salt away