A beehive is an enclosed structure in which some honey bee species of the subgenus Apis live and raise their young. Hive is used to describe structures used by humans to house a honey bee nest. Nest is used to discuss colonies which house themselves in natural or artificial cavities or are hanging and exposed. The beehive's internal structure is a densely packed group of hexagonal beeswax cells called a honeycomb. Bees use the cells to store food (honey and pollen) and to house the brood (eggs, larvae, and pupae).