A small round stone is called a pebble.
Pebell
The Aztecs carved a calendar on a huge round stone known as the Aztec Sun Stone, or Stone of the Sun. It consists of intricate symbols and images representing the Aztec calendar system and cosmology.
A stone dwelling is typically called a "stone house" or "stone cottage."
People during the Stone Age were simply referred to as "Stone Age people" or "Stone Age humans." They did not have specific names or titles as societies were small and mostly nomadic during this period.
A person who makes idols from stone is called a stone sculptor or a stone carver.
A person who makes things out of stone is called a stonemason or a stone carver.
small round-$22 Large Round-$30
medallion
In the Stone Age, the Earth's population was supported by small groups called Hunter-Gatherers.
It is called lyosome.
Gobbler
The round stone is a calendar. They wrote their history on paper.
A Coracle
Castles usually have a mote, towers, and long halls. They also have special defenses inside and outside of the structure.
A small planet going round a big planet is called a moon. Like our moon, it is smaller than Earth - so all planets orbiting round a bigger planet is called a moon.
The first is a round green object called a lime. The second often larger subunit is called stone.
Cherry stone clams are so called because they small and (vaguely) resemble cherry stones.
It is 12.8 Stone when you round up really like 12.755