The term 'Helots' refers to a class of people in ancient Greece who were essentially slaves. They were owned by the state and were required to work the land and provide labor for their masters. The term 'SERFS' is also used to refer to a similar class of people in medieval Europe, who were bound to the land and had to provide labor and services to their lords. Both Helots and SERFS were considered to be lower-class citizens with few rights and privileges.