What is texture?

for scinceWhat is texture?
basicall it's how something feels. Like coarse, smooth, slippery, soft, and if it's raised to a 3D level like bumpy or somethingWhat is texture?
In painting, texture is the visual feel of the painting. Does it look smooth, bumpy, wavy? Look at Van Gaugh's paintings. He had a good deal of texture in them. Many of the Impressionists used texture in their paintings.