Mortar joint

A mortar joint is like the glue that holds bricks or stones together when making a wall. It's like when you use glue to stick pieces of paper together. The mortar is like a paste made from special materials that is applied between the bricks to hold them together. Without mortar, the bricks or stones would just be stacked on top of each other and would not be very strong or stable. It's like when you build a tower of blocks, and you need to use glue to make sure the blocks don't fall over. The mortar joint is important because it helps make the wall strong and stable so that it doesn't fall apart.