You are looking for the word Helot, however helots were not slaves, they were serfs, that is they were bound to their land, and produced half their produce to the Spartan government.
Serfs
Serfdom was the basis of the Russian economy for hundreds of years. Many unsuccessful attempts were made to change things for the Serfs. The one successful event was Russian revolution in 1917. They overthrew the Tsar, introduced Communism and established the Union of Soviet Socialist Republics where all businesses were state owned and operated. It was subsequently argued that they became Serfs of the State rather than to the nobles.
A peasant was an agricultural worker. Peasants grew food and other agricultural products. The peasants could be slaves, serfs, free tenants, or proprietors of small farms. In Western Europe, during much of the Middle Ages, most were serfs, who lived on manorial estates, and were not permitted to leave but were freer than slaves. Serfs typically worked on or two days out of each week for their lords, and much of the remainder of their time on communal labors. They also had their own small plots for their own use.
At the top were the nobility, which included the knights and had a hierarchy within it. Below them were the freemen, which were the middle class. Below them were serfs and villeins, who were not slaves, but also not quite free. A fourth group, the clergy, was quite apart and had a separate hierarchy of its own, though bishops were considered lords for many purposes, and clergy were considered commoners. There is a different four part hierarchy that is recorded in medieval Scottish law, consisting of nobility, freemen, serfs, and slaves. The slaves disappeared from Scotland during the High Middle Ages, however.
You are looking for the word Helot, however helots were not slaves, they were serfs, that is they were bound to their land, and produced half their produce to the Spartan government.
A member of a class of Serfs, intermediate between slaves and citizens
Sparta relied on serfs (not slaves - serfs were people bound to the land). The serfs delivered half of their produce to Sparta, which enabled the Spartans to concentrate on training for war and their normal lives. The serfs were also used a light infantry and archers to support the Spartan armoured infantry.
Serfs were barely above slaves themselves. I doubt any serfs ever owned slaves.
Athens had slaves male and female, who served families in their everyday farming and domestic life. There were also public slaves who were used in state buildings and activities. Even the archers of the army were Scythian slaves, who also doubled as a police force. Sparta had helots - serfs who had a plot of land to which they were bound and gave part of their produce to the Spartan they were allotted to. They were also used as light infantry and archers for the army.
They ruled the serfs/slaves ( serfs are slaves) and they lived well instead of in a dirt floor hut.
A Spartan slave was called a helot. Helots were state-owned serfs required to work the land for their Spartan masters.
The Messenians. They were not slaves, they were serfs, that is they were required to farm the land and deliver half their produce to Sparta. When the Spartans went to war they took 7 serfs (helots) for each Spartan infantryman to use as light infantry support (and coincidentally reduce the risk of an uprising in the absence of the Spartan warriors). When the Spartans lost many warriors in ongoing wars, they recruited serfs a heavy infantry, and granted them freedom after satisfactory service.
Helots where the serfs of Sparta. Serf meaning they were not free men, nor were they slaves.
Slaves
Serfs were slaves who were owned by nobles.
Serfs were slaves who were owned by nobles.