No, shale and sandstone are different types of sedimentary rocks.

Here's a breakdown:

* Shale: Formed from very fine-grained sediment, primarily clay minerals, silt, and organic matter. It has a layered structure and often breaks into thin sheets.

* Sandstone: Formed from sand-sized particles, mainly quartz grains. It's typically harder than shale and has a grainy texture.

While both are sedimentary rocks, their formation processes and composition are distinct.