cache

nouns

a hidden storage space (for money or provisions or weapons)
cache
is a type of (narrower)
the area in any structure that provides space for storage
storage space
a secret store of valuables or money
cache, hoard, stash
(computer science) RAM memory that is set aside as a specialized buffer storage that is continually updated; used to optimize data transfers between system elements with different characteristics
cache, memory cache

verbs

save up as for future use
cache, hive up, hoard, lay away, squirrel away, stash