honey cell 
Cell in which workers store the honey they produced as larva food and winter reserves.
pollen cell 
Cell in which workers store the pollen used to feed the colony.
sealed cell 
Sealed with a wax cover, it might contain a pupa, honey or pollen.
egg 
Reproductive method of certain animals: living cell with a casing and a food reserve, laid by the queen bee.
pupa 
Intermediary stage between the larva and the adult bee, lasting between four and 10 days.