Because they are
Assuming the stones referred to are the unit of mass: There are approximately 10.4 stones in 66 kg.
A collection of stones is often referred to as a pile, heap, or stack.
Assuming the stones referred to are British stones, 13 kilograms is equivalent to approximately 2.05 stones.
Traditional Catholic church was built through stones,marbles and bricks.
There are fourteen pounds in a stone; therefore, two hundred pounds would be 14.29 stone. Also they are not referred to as 'stones', it is only referred to as stone.
Sometimes yes.
A conglomerate is often referred to simply as a "conglomerate."
The presence of stones in the body is often referred to as stone formation or stone development. This can occur in various organs such as the kidneys, gallbladder, or salivary glands.
Stonehenge is an arrangement of stones in England. They are often referred to as mysterious because archaeologists are unsure of how ancient people managed to move them into place.
The act of collecting stones is often referred to as rock or mineral collecting. People who collect stones may also be known as rockhounds or mineral enthusiasts.
Depending on their purpose they could be 'steles', 'obelisks', 'monoliths' or 'grave markers' or even some other names.
sometimes but it dependens on what they got them from