Cache is a hiding place.
- The bears found a cache of food belonging to some hunters.
Cache also is small, fast computer memory that holds recently accessed data.
- Could the cache handle the extra memory requirements?
Cachet refers to a mark of authenticity, prestige, or quality.
- The state courts have a cachet that the local courts lack.
Cash is ready money.
- His wallet was fat with cash when he left the poker game.