Granite and gabbro are both igneous rocks, but they differ in their composition, texture, and origin. Here are the differences:

1. Composition: Granite is composed of feldspar, quartz, and mica, whereas gabbro is composed of pyroxene, plagioclase, and olivine.

2. Texture: Granite has a coarse-grained texture, with visible crystals of various sizes, whereas gabbro has a fine to medium-grained texture, with crystals that are not easily visible to the naked eye.

3. Origin: Granite forms from the slow cooling of magma below the Earths surface, whereas gabbro forms from the slow cooling and solidification of magma that intrudes into the crust or rises to the surface.

4. Color: Granite is usually light-colored, with shades of gray, pink, and white, whereas gabbro is dark-colored, with shades of black and dark green.

5. Hardness: Granite is harder than gabbro and is more resistant to weathering and erosion.

Overall, granite and gabbro are similar in that they both have a crystalline structure and are durable and long-lasting. However, their differences in composition, texture, and origin give them distinct physical properties and visual characteristics.