Stone is a material. You can use it to make things.
You can find stones outside in your garden.
When people want lots of stone to build houses, they must dig it out of the ground.
They make a huge hole in the ground, called a quarry.
Very big machines are used to dig out big blocks of stone.
These stones are split into smaller stones, and sold in shops like Roadstone in Castlebar.
People can buy them and use them to build walls or make a nice path for outside their house.
Stones bonded together with mortar (a mixture of lime, cement, sand and water)
Bricks bonded together with mortar.