Squirrel's cache is a term used to describe the food that squirrels store for later use. This food typically includes ACORNS, which are six-letter NUTS that come from oak trees, as well as cones and NUTS. Cones are four-letter structures that are found on many types of trees and NUTS are four-letter edible seeds that come from a variety of plants. Squirrels also store five-letter cones, which are the hard outer shells of certain types of NUTS.