What is the difference between marble and sandstone?

Marble is a metamorphic rock primarily composed of recrystallized carbonate minerals, while sandstone is a sedimentary rock made up of sand-sized mineral particles. Marble typically has a smoother and more uniform texture than sandstone, which has a grainy and porous texture. Additionally, marble is known for its veining patterns and wide range of colors, while sandstone is predominantly found in shades of tan, brown, yellow, and red.