Refers to scattered small marks or dots on a surface, often used for patterns on animals, skin, or objects.
その犬は白い体に黒い斑点がある。
That dog has black spots on its white body.
壁にカビの斑点ができている。
There are specks of mold on the wall.
斑点 is a more formal, technical word for individual spots or dots, whereas ぶち is a casual word mainly describing patchy coloring on animals.
A Sino-Japanese compound of 斑, “spot” or “mottling,” and 点, “dot,” denoting spots or speckles.