Granite is an igneous rock that is typically light-colored and coarse-grained, with visible grains of minerals such as quartz, feldspar, and mica. It is formed from the slow cooling of magma deep underground.

Andesite, on the other hand, is a volcanic rock that is typically gray to black in color and fine-grained, with small mineral crystals that are not visible to the naked eye. It is formed from the rapid cooling of lava at the Earths surface.

In terms of composition, granite is mainly composed of quartz, feldspar, and mica, whereas andesite is composed of plagioclase feldspar and pyroxene. Granite is also more resistant to weathering and erosion compared to andesite, which is softer and breaks down more easily.