Stucco

Stucco is like coloring on the outside of a house. Remember when you draw on paper with crayons or markers? Stucco works the same way, but it's done on the outside of a house instead of paper.
First, people put up a special layer made of rocks, sand, and cement on the outside of the house. Think of it like drawing the outline of your picture.
Then, people mix up another special paste made of cement, sand, and water, and they spread it all over the outside of the house. This paste is called stucco.
They can add colors to the stucco paste to make it look really cool or match the colors of the surrounding buildings.
Finally, they let the stucco dry and harden. After that, the outside of the house looks strong, smooth, and colorful like a big piece of art!